Search found 9 matches

by Cocoa
Thu 2020-11-19 11:33
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

Re: vs1003b pitch/tempo shifting

Thanks a lot, Pasi !
by Cocoa
Wed 2020-11-18 11:53
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

Re: vs1003b pitch/tempo shifting

Thanks for your explanation. By the way, which of your products are capable of performing it well ? What are them ? :D
by Cocoa
Wed 2020-11-18 6:57
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

Re: vs1003b pitch/tempo shifting

It confuses me a lot that speed-down playing is worse than speed-up playing, that's really amazing.
Here is the original song.
by Cocoa
Wed 2020-11-18 5:29
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

Re: vs1003b pitch/tempo shifting

It's a mp3 file. Sample rate=44.1khz. Bitrate=128kbps.
Clock=12.288MHz, CLOCKF=0xf800, SPI_MODE=0x0804.
by Cocoa
Tue 2020-11-17 8:21
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

Re: vs1003b pitch/tempo shifting

Yes, it happens with all files. The clock I provide for vs1003b is 12.288MHz, and I set 0xf800 to CLOCKF at the same time. In this case, the clock of vs1003b has reached the maximum. And actually it play normally at original speed, which means the clock is already enough for normal speed or a lower ...
by Cocoa
Mon 2020-11-16 11:28
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

Re: vs1003b pitch/tempo shifting

The noise sounds like a tape being stuck, it just lasts for a moment, and occurs in next several seconds. So the song is not played that frequently. The algorithm I used was downloaded from your website. If it's the result of the algorithm, what's the newest algorithm ? Could you provide me a link o...
by Cocoa
Mon 2020-11-16 2:42
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

Re: vs1003b pitch/tempo shifting

The tempo can actually speed up or be slowed down, this is normal.
by Cocoa
Fri 2020-11-13 3:25
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

Re: vs1003b pitch/tempo shifting

Thanks. I'm sorry for this unclear expression. It just plays with normal speed. But now luckily I've found the problem. The values of SPI_AICTRL0 and SPI_AIADDR are both reset after a soft reset. Now there is another problem, when it plays at a speed or in a pitch I set, the volume changes a lot, be...
by Cocoa
Wed 2020-11-11 10:38
Forum: Microcontroller Software
Topic: vs1003b pitch/tempo shifting
Replies: 15
Views: 244

vs1003b pitch/tempo shifting

Hello. According to plugin instructions, I've loaded the program to vs1003b, besides, I put 0xB000 to SPI_AICTRL0, and 0x30 to SPI_AIADDR. However, it doesn't work. I can't find out what is wrong with it. What reason may it be ? The sample rate is 44100Hz,and it's mp3 song. :?