VSDSP Forum

Great to hear it works for you.

The better version exists for vs1005.

Is there any application / how-to detail or examples on ogg or wav encoding in the book? No, the book teaches how to develop programs that run inside the vs1053. You don't generally need to do any programming for vs1053 if you use it for what it normally does, like decoding and encoding. If you use...

Hi,
I noticed we have a suitable starting point - the vs1053b AD Monitor with Bass/Treble control. So, I added the pitch shifter function there.

The packet attached, let me know how it works.

This version of the pitch shifter is very simple and low quality. There just isn't enough processing power reserve to do anything complex. (But we have a better version somewhere.)

It's the same code. I'll try to take a look this week at how at odds the encoding mode actually is with the pitch shifter. If their core routines do not interfere with each other, then it would 'only' need some ratio finetuning to keep the output latency relatively constant. (Not to say it would be ...

1. Pop happens if gain is changed when the signal is non-zero. The amount depends on the signal level and amount of gain change. This is universal. vs1011e has "analog" and digital volume control parts, so when you cross -6dB and -12dB, there may be a larger pop. 2. Keep sending data to SDI, or you ...

VS1000 can have only one file "open" at a time. The second file you would need to read outside of the filesystem routines. If you assume non-fragmented files, you would: 1) FileOpen() the side-information file, read and save minifatFragments[0].start (and optionally size). Read a sector with ReadDis...

SD cards consume a lot of peak current while writing. Do you have a separate power supply for the SD?

Also check the orientation of your microphone capsule. There can be a huge difference in the output level if the capsule is the wrong way around.

The Ogg Vorbis decoder in vs1000 supports a "goTo" feature in 1-second resolution. With some tricks the resolution can be made better. Most other decoders support the same feature, for example the latest vs1010 and vs1005 mp3 decoder versions implement a fairly quick goto. If you have control over t...

It's hard to say without knowing where they were added. If in series with the output, they limit short-circuit current during headphone plug insertion. (While inserting a plug, it physically short-circuits some of the contacts.) -- This is as much to protect the power supply as it is to protect the ...