VSDSP Forum

Your quote is not from the VS1003 datasheet, but from the VS1053 datasheet.

Nevertheless, both VS1003 and VS1053 have similar stream buffers (and also VS1011 and VS1063):
- The stream buffer is a 2048-byte FIFO.
- If >= 32 bytes are free (FIFO has 2016 bytes or less data), DREQ is high. It is now ...

Dear Stefano,

For the decoder side sample counter, use the VS1053B Patches package (with or without the FLAC decoder), and see Chapter 1.3, Sample Counter , of that document. As explained in that chapter, all you need to do is to read a 32-bit value with your microcontroller from a certain address ...

ottinger wrote:I am wondering if somebody is working on an OPUS-Celt (ENCODER) codec for the VLSI-AudioDSP.

Thanks for the suggestion! Currently we are not working on the OPUS-Celt codec, but I'll keep an eye on that.

Kind regards,
- Henrik

Unfortunately we don't have application code for VS1000 that would allow you to play two independent mono files simultaneously on a VS1000.

Kind regards,
- Henrik

Hello Steven,

I have not noticed the issue you mention with VS1000 ReplayGain tags. However, it just might be related to how Album Gain and Track Gain are recorded. Sorry that this reply is a bit long, but this is slightly complex.

If available, VS1000 will always use Album Gain. If that value is ...

Dear Ken,

to me what you have quoted looks all right.

Don't worry about the 32-bit instruction memory. Instruction memory writes have been divided into two 16-bit writes so that all operations look the same.

One question that comes to mind is that are you sure your SCI write operations in ...

Dear Stefano Isella,

I think I know the reason for your problem.

First of all: congratulations! You are already really close to a fully working streaming system using two VS1053b's! If what I suspect is right, you need just to make a few extra steps to get the perfect streamer!

So, here it is ...

Dear BardenDK,

let's see if we can solve your issue.

First one question: have you loaded the VS1063a Patches package before activating recording?
http://www.vlsi.fi/en/support/software/vs10xxpatches.html

You seem to set up your registers properly for max 12 dB autogain operation.

You are right ...

it maybe diffcult to make the frequency response reach 20khz when mp3/ogg encoding,but can we develop a patch to make frequency response reach 20khz?without considering the sound quality!for example,using the lowest bitrate to achieve 20 KHZ,

Theoretically this is possible for even low bitrates ...

This Wednesday we have updated the VS1063 Datasheet so that it better explains how to activate I2S.
For details, please read Chapter 10.13, I2S Output from the datasheet, available at http://www.vlsi.fi/fileadmin/datasheets ... 1063ds.pdf .

Kind regards,
- Henrik