Search found 27 matches
- Fri Jun 23, 2017 3:26 pm
- Forum: Development Tools and Programming
- Topic: Synchronous Sample Rate Conversion Problem
- Replies: 8
- Views: 8012
Re: Synchronous Sample Rate Conversion Problem
Hi, AN00230 has not been written yet. But actually I don't think this is what you need. I don't need to make a sample rate conversion, instead, I just want to transfer the music without change the sample rate. Do you need to cross asynchronous clock domains? If so, ASRC is what you need even if the...
- Fri Jun 23, 2017 3:14 pm
- Forum: Development Tools and Programming
- Topic: Synchronous Sample Rate Conversion Problem
- Replies: 8
- Views: 8012
Re: Synchronous Sample Rate Conversion Problem
The code in ASRC app note AN00231 is optimised for size rather than performance, but it may work at 192kHz/176kHz in AND out. You could try: increasing this to 64: #define ASRC_N_IN_SAMPLES You could temporarily try this (overclock by 20%) to see how far off the MIPs are (please note this is not a ...
- Thu Jun 22, 2017 9:39 am
- Forum: Development Tools and Programming
- Topic: Synchronous Sample Rate Conversion Problem
- Replies: 8
- Views: 8012
Re: Synchronous Sample Rate Conversion Problem
If you are slave on one side and master on the then you don't need any SRC at all? Can't the I2S master drive the I2S slave LRCLK and BCLK lines? Did you mean that if the data path is spdif in->spdif rx(xmos)->i2s slave(xmos) -> i2s master(dsp) then I don't need to use the asrc or the ssrc lib func...
- Thu Jun 22, 2017 9:27 am
- Forum: Development Tools and Programming
- Topic: Synchronous Sample Rate Conversion Problem
- Replies: 8
- Views: 8012
Re: Synchronous Sample Rate Conversion Problem
Thank you for your reply, my clock architecture is on the attachments file. I am now trying to follow your suggestion.
- Thu Jun 22, 2017 6:16 am
- Forum: Development Tools and Programming
- Topic: Synchronous Sample Rate Conversion Problem
- Replies: 8
- Views: 8012
Re: Synchronous Sample Rate Conversion Problem
Do you need to cross asynchronous clock domains? If so, ASRC is what you need even if the fIN and fOUT are nominally the same. However ASRC cannot currently work with above 176.4KHz on both sides without further optimisation, although it might be possible with a large block size Yes, the clock of t...
- Wed Jun 21, 2017 3:04 pm
- Forum: Development Tools and Programming
- Topic: Synchronous Sample Rate Conversion Problem
- Replies: 8
- Views: 8012
Synchronous Sample Rate Conversion Problem
Hi, I'm doing a project about receiving the music from the spdif receive module and output the music to the I2S module. My reference software is the AN00231_ASRC_SPDIF_TO_DAC . However, the software is about the asynchronous sample rate conversion and the supported the sample rate is between the 44....
- Tue Jun 20, 2017 3:51 am
- Forum: 中文讨论区
- Topic: 中国区客户技术支持怎么获得?
- Replies: 11
- Views: 83088
Re: 中国区客户技术支持怎么获得?
感谢,今天代理商已经联系我了。wilsonzhang wrote:好的, 我今天会让代理商技术支持跟你联系
- Tue Jun 20, 2017 2:59 am
- Forum: 中文讨论区
- Topic: 中国区客户技术支持怎么获得?
- Replies: 11
- Views: 83088
Re: 中国区客户技术支持怎么获得?
我在江苏无锡,如果方便的话麻烦你电话或者邮件联系一下我可以么?感觉这样沟通效率真的非常低下,我的Tel:132-9664-3804,我的email:zhengyang.hubu@foxmail.com。非常感谢!wilsonzhang wrote:你方便告诉我你是在哪个城市吗?zhengyang0512 wrote:你好,请问怎么联系你们的FAE呢?wilsonzhang wrote:感谢这些热心的用户,我们中国区有fae ,代理商也有fae ,有任何问题可以联系我们
- Sat Jun 17, 2017 12:56 pm
- Forum: 中文讨论区
- Topic: 中国区客户技术支持怎么获得?
- Replies: 11
- Views: 83088
Re: 中国区客户技术支持怎么获得?
你好,请问怎么联系你们的FAE呢?wilsonzhang wrote:感谢这些热心的用户,我们中国区有fae ,代理商也有fae ,有任何问题可以联系我们
- Thu Jun 15, 2017 9:51 am
- Forum: Development Tools and Programming
- Topic: I2S Master to I2S Slave problem
- Replies: 5
- Views: 7520
Re: I2S Master to I2S Slave problem
Oh, I found the two reasons which cause the problem: First, the I2S slave clock should be stable. At the beginning of my test, I use the oscilloscope to test the signal of my crystal vibration source at BCLK and LRCLK. The two clock changes all the time, although the range is not very big. I choose ...