2.PDAA, the milestone of the portable hi fi player
PDAA is a new audio category which is abbreviated from Portable, Digital, Acoustic, Amplifier, PDAA is the first portable Hi Fi device in the audio history.
1, Introduction
It is undoubted every body love music. Music is the symbol of the progress of the human civilization. We can’t have no the mental nutrition of music. Music activities can bring the double experience of art and aesthetic. Can we do that? How can we do that?
2, The definition of the serious music
People use to define the music style into serious music and popular music. But at the complex and dynamic time, the single standard of music category can’t follow the new requirement of the changing of the music art. We need to define again with is the serious music. The serious music has been existing for hundred years, different audience have different standard of the definition.
The symphony orchestra and serious music performance institute keep to the tradition definition of the serious music. They think the classical music is mentioned to the traditional classical music artworks represented by Bach, Mozart, Beethoven in Europe from the middle of 18C to the middle of 19C. While the modern youth tend to define the serious music with wider standard. They like to appreciate the music played with more modern instruments, diversification playing skills, different styles of presentation and various playing places. In the modern audience conception, those music which can sublime his internal moods, and moved by the music aesthetics is called serious music. For example the show together played by YO YO MA and popular music band STING at the opening ceremony of winter Olympics, such a performance faint the boarder of the serious music and popular music even fade away the bound line.
What people need is the enjoyment of the music to the spirit than not to simply divide the external music category. To decide the music is “serious”or “popular”is a matter of music psychology --- which is a developing matter of the capability of the music aesthetics.
The reason of the popular music can be popular is it can be easy understand by audience. The reason the serious music are not popular is that it need rich experiences to appreciate. It is a big task to educate the general audience to be a audiophile.
3, The serious music in today
The media of the serious music is existed in two main means. One is the living performance in the concert. The other means is recording media, such as the CD, DVD, and other digital formats.
The living concert performance is the most reality means to appreciate the music. But a survey indicates that the audience number attending the concert is shrinking. For example, there is 15 percent decrease of the audience compared decade ago in USA. To the other undeveloped districts the audiences has less chance to appreciate the living concert. There is another flaw of living music listening that the playing site is fixed. It apparently in the remote place you can never have chance to attend the local concert hall. That means you will never see the master player’s living performance in the remote districts.
The recording is the other way to appreciate the master peaces. The recording companies have recorded lot of the music tracks. You can select your favorite album for listening. But you still face a big challenge that the general player can’t playback the exactly music moving. Because the master player usually play the music with numerous details while the general player can’t reproduce the details. To listen to the music with the devices of mp3 player, TV set, radio tasteless because the distortion and limited frequency response.
Of course there a method to playback exactly the glaring and charming performance of music, that is the hi end audio system. With the perfect auditioned hi end system you can get the sound effect similar to the living playing site. All you need to do is to replace the different discs you can hear freshly the playing of Pavarotti or Boston Symphony Orchestra.
In a long time, we was thinking the hi end audio system is the best way to promote the serious music and engaging in the field. Finally we fond out the new problems on hi end audio devices. Some of them are hard wound which are hard to be solved.
4, Negative impacts of the traditional hi fi system to the developing of the serious music promotion
The traditional hi fi audio system is easily effected by following various factors: sound sources, amplifier, speakers, cable, discs, power supply, space, experiences and skills of the user to the hi fi audio devices. The sound quality come from the same system is very different. Some times the music can move you weeping in A home, some times the sound quality is harsh in B home for the difference of the space of the room. These problems can be deal with professional skills such as to adjusting the surface of the room, purify the power supply, and replacing the cable. The ordinary consumers are lacking the skills about the acoustic and electronics experiences.
Limited by fore mentioned conditions, the hi fi audio system is only the small circle’s plaything. The contribution of the hi end audio system to the populize of the serious music is limited.
More sadly, the high price of the hi fi audio devices keep the massive customers out of the hi fi door.
Because the world audio industry lacks of competition capability, the cost of the hi fi devices is higher and higher. The increasing price scares a lot of audiophiles, especially the youth. The new generation of hi fi audience have to turn to IOPD. For example, the speaker price of ROGERS is USD600 decade ago. The price of it has increased up to USD 3000. Comparing to other electronic products, the price have been decrease for many times. Only the audio products have increased. It seems the audio industry is crazy before it’s dying.
The crazy activities of hi end audio devices make the audience lost the confidence on it. There is no hi end audio device to reproduction perfectly the recording, plus there is no possible for most audience go to the concert for music appreciation, the serious music is difficult to spread to more massive peoples. If there is a solution to solve these problems ? We have made a lot of technical research and got a solution for promotion of the serious music.
5, The explanation of the culture of Hisoundaudio and the designing conception of the PDAA.
Hisoundaudio advocates to service the society with technology and to move people with music art. That need to make use of the technologies of our acoustic knowledge to create the audio products strong desired by the massive. To realize our value by the customers’ satisfaction of the production. Move people with music art is another culture of Hisoundaudio company. We are thinking all the time that the perfect reproduction of the music is an abstruse artwork. Therefore we are not only engaging in the simple audio products design and sale, but also engaging in the acoustic art recreation. We definitely don’t limit the products as the audio devices, but deem it as one important part of the music recreation.
There is two thousand and five years Chinese extensive and profound culture can be inherited, the ancient Chinese history formed Chinese special nationality spirit and unique music taste. What Hisoundaudio ought to succeed is the long history merits of the old Chinese culture. We also clearly realize that the hi end audio technology was coming from the Western industry civilization. Hisoundaudio pursue to melt the modern western technology into the mysterious ancient oriental culture.
We know we can’t be biased to the technology end or culture end. If the audio device has no support by the culture backbone, the music is only the electronic sound. On the contrary, if not depend on the advanced electronic technology, it is impossible to perfectly reproduce the soul of the music.
So all the designing of our products has been injected with the understanding of the ancient culture and modern technology. We repeat amending times by times of the design to get the best effect of the performance of the products which can present the really music meaning. The products of Hisoundaudio has it unique music taste different from any other players. What does Hisoundaudio represent? Hisoundaudio represents the best portable hi fi player designer and maker in the world. Hisoundaudio also represents the high cost-effect products. Hisoundaudio represents the responsibility of promotion the serious music.
Hisoundaudio is not only an audio devices manufacturing company but also a company who take the responsibility of music art promotion. Therefore we are more focus on the culture construction and care less about the commercial profits. Our working target is to let more people can have chance to share the music enjoyment playing by Hisoundaudio’s hi fi portable player
Via the hi fi portable player, you can enjoy the hi fi music at any time and any places. That can let more people can appreciate the music charm. People can also have chance to contact more music styles. Through massive listening to the world wide fine hi fi music tracks, you can improve your music appreciation capability, improve the music accomplishment and art accomplishment. Also improve the customer’s personal accomplishment. We can boast our aim to promote the serious music will benefit the customers’music art understanding.
6,The design orientation and standard of AMP3
We combine the promotion of serious music task with the revolution of the audio industry and company culture together to design a new generation hi fi portable player. Hisoundaudio firstly in the world claim the “all-purposed portable hi fi player”conception. AMP3 bears the historic mission of promotion the serious music to more massive people, popularizing the serious music. So we have the following rigorous designing requirements of the AMP3:
1), it must has the hi end audio device capability.
2)it must can explain the music artwork spirit.
3), It must suit for most of the music genres
4), It must satisfy more than 95% customers with it’s sound and manufacturing quality.
5),It must can store a great deal of music sources.
6),It must be a portable audio device.
7), The playing time of the battery must exceed 100 hours for half a month trip.\
8), It must have the high cost-efficient
9), It must have the characters of a classical audio device. It should have ten years marketing life.
10), It should promoted by itself with the perfect merits of sound quality and manufacturing quality.
7, The detail introduction of the designing of the AMP3
The following factors will effect the sound quality:
1), The effect of space echo.
2,) The distortion of the player system.
3, )The distortion of the music sources.
4, )The distortion of the audience’s music taste.
5, )How is the sound difference between the MP3 and CD formate？
Why in the general conception the mp3 format represent the low fi? We should looking for the measurement to deal with the flaws.
(1,) The key problem is the file compression bit rate. In the early days of mp3 format the memory capacity has only 128,256 MB. It should highly compress the files to download more tracks into the memory. It is compromise the sound quality to the memory space. The music is recorded by microphone, then transmitted by cable to the recording equipments, then become the mother recorder CD. This proceeds have make a lot of audio signal lost. The sound quality played by the music with a general CD player is low fi. The normal recording is compressed again by normal PC software and played by the conventional MP3 player with inferior earphone. To be frankly the sound can’t called music but the voice files.
The more worse, in the early days the band wide in the internet is slower. It have to compress again to up load the mp3 files more and fast. Saying no audiophile, the general audiences will not stand the tasteless sound of mp3 player. This is the reason the mp3 player can’t qualified to be a hi fi audio device.
Now, the related maker have improved the memory capacity up to 8G, even to 200G and more. The technology of compression formats can be 320k, 640k ,even lossless, such as the formats of WAV, APE, FLAC or so . The consumer can rip their CDs into lossless music file to bring with them conveniently.
We have a serious comparing test that the music lost with 320k compression bitrate is basically acceptable. If the later playing device is suitable, the overall music performance can be very fresh. On the contrary, if the compression bitrate is less than 256k, the music performance will be cut-and –dry without details.
The lossless formats, such as WAV, APE, FLAC is qualified to be hisoundaudio requirement.
(2,) The key to improve the sound quality of MP3 player is the earphone. Right, it is the earphone. To listen to the music with earphone no need to face different space problem of traditional audio system。 The music details can’t be consume by the space standing wave or amplify as the home audio devices. The earphone can hear all the details which earphone driver can make. There is no reflection distortion caused by the environment. So it is easy to get the more precise sound color and ideal transient response to listen the music with earphone. The earphones equal to the speakers in the traditional home audio system. It is most important segment in the audio system which can converse the electricity power into the sound energy. If the earphone is bad, any efforts made in the previous segments of the playing system is in vain.
Unfortunately no rest portable player makers think highly on the earphone. All of them provide the inferior earphone come with the player with the inferior one. The earphone maker also don’t expand their business into the really research field of the player. So the two segment of player and earphone is separated. That is no strange the customer can’t pair perfectly a whole portable audio system with the player and earphone.
It seem a simple problem about the pairing of the earphone and player. In fact it is very difficult and complex research works and auditioning works.
(3,) The key solution to improve the sound quality of the portable player is the earphone amplifier. The earphone is works as the speakers in the traditional audio system .So you may know the earphone amplifier is the heart of the whole system. It is a common sense that a pair of hi end speakers must be paired with an excellent amplifier to propel it to abstract the exact merits of the speaker. The earphone amplifier takes the role of the amplifier in the traditional audio system. Because there different design of the earphone. Some feature with low sensitive which need to be propelled with high power to present the really characters. Some earphone has high efficiency which is easy to get the wonderful sound quality. Some earphone’s taste like the water with no taste. Some earphones are juicy like the flowers. Some earphones come with the impedance of 16om. Some earphones featured with 300Om even 600Om.
In order to saver the power in the design of general MP3 player, class D amplifier is frequently adopted. The Op grade class D amplifier is featured with low output current. That is no strange the sound volume is smaller. For example, say, a mp3 player can have 100 mW output of power working with the earphone of 32 Om, It will become to 50mW of the power when working with the earphone of 64 Om, It will reduce to have the output power down to 12.5 mW when working with the earphone of impedance 256Om, such as the Beyerdynamic DT990. That is to say even if you tweak up the volume to the top, the sound come out from the high impedance earphone is still weak to be heard.
More worse, there is no any mp3 player come with the output power of 100Om. That is to say IPOD, Sony and other portable player maker can’t make use of the hi end earphone to get the perfect sound quality.
It needs to balance the items of power, driver, sound quality, tunes, even sound genre. All of this is a system integrated works. If the output power is smaller, it can’t propel the high impedance earphone. If the output power is bigger, the integrate battery will be consumed soon. Even to amplify the signal is too difficult to make the sound charming.
Aforementioned items are only the beginning of the designing. There are much more items should be considered inside the small enclosure. The big efforts will be paid on dealing with the various signal interfering, the ground wire noises, the power noise, and clock vibration caused by the flash, or so.
Even if you can solve all above problems, the last step is more important. That is how to perfect pairing with the power, impedance, frequency response, the sensitivity and unique sound character of the earphone. To challenge your patients, even though you solve all aforesaid matters, the whole works is just finished half.
Because the hi fi system design is not only the technology works but also more the music art activities. It needs long time music practicing attainments, rich social experiences, and personality.
If you have’t researched and study different world wide hi end audio systems you can’t get the sound standard of high fidelity. If you lack of going to the concert you will never realize what is the really living playing music. All of those humanities requirements of designing a hi fi player system is lack in the multinational companies.
Hisoundaudio challenge the difficulties with system works. We begin with the solution of pairing perfectly the earphone and earphone amplifier. We design the earphone and amplifier and player by ourselves in house.
How to obtain best sound quality of the system? We firstly paid attention on the earphone amplifier, then to optimize the music sources, and earphone. We applied the Class A circuit design which no rest companies dare to use to deal with flaws of the digital music sources which is dry, cool, and thin.
As every body knows, class A amplifier circuit is the symbolize of the traditional hi end amplifier. It’s sound quality of warm character can exactly compensate the flaws of the digital music sources. With nature complement of the warm class A amplifier and cool digital music sources, the sound quality of AMP3 present the amazing music performance. The tune color of AMP3 can be as fine as a hi end CD player’s.
The reason why the rest other company dare not to apply the class A circuit design is it consume too much of power. It is luck that Hisoundaudio has more than 15 years experience on the traditional hi end audio products R&D. We have a private EMA (energy management arrangement) technology to solve the power saving problem.
For the commercial secret reason , we don’t want to talk too much of the EMA technology here.
In order to present the advantage of the class A amplifier, we focus on the periphery design of the parameter of the earphone such as the impedance, frequency response rage, dynamic, and sensitivity.
We don’t want the customer to waste lot of energy, money on looking for a matched earphone amplifier to pair with the hi end earphone of Beyerdynamic. We want to provide the consumer the best hi fi portable audio system in one shop.
Refer to the main chip of the player, we give up the Philips chip for it has a very unique sound character. The unique sound character of it conflict with Hisoundaudio sound character. Because Hisoundaudio player feature with neutral character. The purity of the sound of the main chips is at the similar standard. Only the neutral sound character music sources can make the later system’s devices performance with Hisound’s sound character.
We have compared with the Korea master chip, it’s sound character is delicacy and luxuriance. But it is overdone with the delicacy and luxuriance to neglect the internal inspiring of the music
it’self. This kind of sound character is not fit to pair our later system. We would like to select the music move comparing to the flowery notes and quiet background. We know as the musical player, if it lacks the music soul, the music will have no life. Just because of the pertinacious insisting, we give up the Korea Master chip to turn to the American brand Sigmatel.
Sigmatel master chip is a mature solution for the mp3 player. The sound character of it is neutral, not overdone. The back sound is lovely plain. While inside the plain of the sound contains the some of the music taste. This character can pair with our later system to make any music alive. This is our ultimate designing target.
We evaluate the portable audio system with four items: sound resolution, separation of the sound stage, the sense of the power, and the flows of the music. Among of them, the sound resolution represents the details reproduction capability of the music, the separation of the sound stage means the width of the sound stage and position of the instruments heard by the earphone. The sense of power make up of the satiation of the music. The big volume don’t means good music. It need to release the amazing power exactly. If this releasing with overpower, It will make the music become harsh, freeze, and tasteless. If it lack of power, the music performance is weak, soft, and can’t expand.
Only the tuner with rich experience on the audio system can audition the player to the exact pairing points. By this way the music can be replayed freely. It hard to describe the fantastic music replayed by the hi fi system.
The dynamics of the music are made up of the fresh details and charming rhythm. The fresh details means if the sound is like or not to the living playing. the more fresh of the music reproduction, the more alike to the original recording sound. By this way the music can be explained with cadence rhythm and continuing.
We analyze and test the sound quality of the audio system with the following scientific items: sound stage, transparency, position, laying, airy, speedy, and transient response. AMP3 can satisfy all the high standard of aforementioned items. So it is no strange you can hear the fantastic music with the system.
8, The social contribution of the hi fi portable player:
To Sum up afore mentioned statements, AMP3 is a really the first hi fi portable player in the world. It has broken through the industry limitation of hi fi grade sound quality of portable player. The PDAA will correct the misleading music education of the conventional mp3 player which is a kind of unbalanced and distortion noise. The PDAA will let people to enjoy the living music taste at any time and any place. The affordable portable player can popularize the serious music to the massive youth. The PDAA is the first hi fi portable player in the audio history. It is the milestone of the portable hi fi audio history.
3, Terms and Conditions
Conditions of Use
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- 4, Privacy Policy and Return Policy
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Return Policy
1. Standard 7 day return policy: if you do not like / are not satisfied with an item within 7 days of receiving it, you can return the item for a refund or an exchange providing it is in a perfect and resalable condition. We understand you will have to take your purchase out of its box to try it, but the product must be returned in the condition it was received (with any songs etc removed). We reserve the right to refuse returned items or deduct a 10% restocking fee if they are not in a resalable condition when returned. Pleas be aware, you should be in charge of the returning shipping fee and custom fees.
2. Manufacturer's warranty: out with this 7 day period, you are covered under the manufacturer's warranty which is typically 1 year. If your product becomes faulty during this period, you should contact the us. . We will then arrange for your item to be repaired or replaced with a new product. If the product you purchased is no longer available, you will be provided with a new product of equal or superior value. |
