soundaware
Member of the Trade: Soundaware
- Joined
- Sep 19, 2013
- Posts
- 537
- Likes
- 235
INDEX
Ⅰ The core for high fidelity audio streaming playback Ⅱ Other points on audio processing architecture
1. Pure CPU processing modes
2. Other dual clock play modes
Ⅲ Advantage of SOUNDAWARE patented FPGA audio playback architecture
Ⅰ The core for high fidelity audio streaming playback
With the technology of DAC and Analog AMP becoming mature , digital output quality has become the key focus in many HIFI manufactures researching high fidelity digital streaming playback. Testing IIS and spdif could judge the digital output quality. From the recognized industry's top digital audio analyzer, digital output quality is mainly influenced by two aspects: clock short-time stability and low frequency noise level. When output frequency accuracy within the normal standard level, although long time drift won’t largely affect short sound quality, but clock short-time stability and low frequency noise level could make enormous decisive effect on decoder, no matter on details, sound-stage, imagination or resolution.
Following with the technology developing, digital input de-noise & de-jitter processing receives more and more attention on developing new DA chip. ESS9018’s internal DPLL improve external jitter effect, but after assembled into SOUNDAWARE® products, the FPGA playback architecture & algorithm decoding digital audio alone, without requiring DPLL, could reach to higher HI-FI performance on the contrary. Moreover, after three years of optimization, added our own unique audio processing algorithm, FPGA architecture has achieved astonishing performance on digital audio playback performance.
Ⅱ Points on other audio processing architecture
- Pure CPU processing mode
- Other dual clock play modes
Ⅲ Advantage of SOUNDAWARE patented FPGA audio playbackarchitecture
1. Has all advantage of pure CPU processing streaming players and all interfaces, supporting mobile phone, iPad controlling, external storage (hard disk, USB, SD card, etc).
2. Use separate audio processing AudioDSP (FPGA, ASIC) hardware decoding module. Power and CPU is isolated, supporting 8 groups (over 20 circuits) precise power input, reaching for excellent signal/noise ratio and THD+N level. CPU and Audio DSP is connecting with each other real-timely, the delay is lower to be 1us, the processing performance could reach to 300 Mbit per second, completely satisfy the severe audio processing request, supporting any bit rate (far more than 32bit, 384khz), without any disconnection or error code in any circumstance.
3. The audio DSP use the FIFO ultra-high speed asynchronous buffer technology, (ASRC) and real-time CPU ultra-high speed processing interface, isolating any jitter caused by external interfaces. So all interfaces have the same playback performance (sound quality) with same quality power.
4. Dual clock input, internal delay of audio DSP is lower to be 5ns, less than 1ps stability, based on original clock driving decoding, supply the most accurate, most stable decoding processing for 44.1khz X and 48khz X files separately.
5. Use the Spdif clock and data directly synthesized driving technology, avoid the jitter caused by the second processing of IIS converted to SPDIF.
6. Strong dual chip processing capability and all bottom details well mastered technology, perfectly supports normal music formats, excellent operating experience and many different interfaces.
