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+---- Thread: loading sample problems (/showthread.php?tid=1175)
loading sample problems - aork2 - 08-21-2021
I have tried everthing thats posible.
I'm working on audacity, I have tried wav mono and stereo 8bit and 16bit, i have tried in raw in mono in 8 and 16...
There is no way to make it work, the wird thing is it loads every time diferent samples with no real patron or logic
Im trying to upload about 600 samples, it could be the problem, but my sd card can handle it so i du know whats the ... problem
Please, help, i have tried everithing and i have been for 4h on this
I add some of the samples
RE: loading sample problems - mgd - 08-21-2021
I copied your files into the samples folder on my SD card, loaded them, inserted them in a pattern, played them.
What exactly is not working?
RE: loading sample problems - Barney Rubble - 08-21-2021
Hey I looked at two of your files 2.wav and 7.wav and the header information points to the fact you are exporting from audacity using the NIST Wav format.
Try exporting using the microsoft wav format.
NIST_1A
1024
channel_count -i 1
sample_rate -i 44100
sample_coding -s3 pcm
sample_n_bytes -i 1
sample_sig_bits -i 8
sample_count -i 62626
end_head
I don't think Nerdseq supports NIST wav format - Thomas can confirm
RE: loading sample problems - mgd - 08-21-2021
Sox gives this for all files:
sox --i 2.wav 22.wav "3 Rudebwoy - Synth1.wav" "4 Mega Piano 3.wav" 7.wav
Input File : '2.wav' (sph)
Channels : 1
Sample Rate : 44100
Precision : 8-bit
Duration : 00:00:01.42 = 62626 samples = 106.507 CDDA sectors
File Size : 63.7k
Bit Rate : 359k
Sample Encoding: 8-bit Signed Integer PCM
Input File : '22.wav' (sph)
Channels : 1
Sample Rate : 44100
Precision : 8-bit
Duration : 00:00:00.20 = 8674 samples = 14.7517 CDDA sectors
File Size : 9.70k
Bit Rate : 394k
Sample Encoding: 8-bit Signed Integer PCM
Input File : '3 Rudebwoy - Synth1.wav' (sph)
Channels : 1
Sample Rate : 44100
Precision : 8-bit
Duration : 00:00:00.41 = 18295 samples = 31.1139 CDDA sectors
File Size : 19.3k
Bit Rate : 373k
Sample Encoding: 8-bit Signed Integer PCM
Input File : '4 Mega Piano 3.wav' (sph)
Channels : 1
Sample Rate : 44100
Precision : 8-bit
Duration : 00:00:00.29 = 13000 samples = 22.1088 CDDA sectors
File Size : 14.0k
Bit Rate : 381k
Sample Encoding: 8-bit Signed Integer PCM
Input File : '7.wav' (sph)
Channels : 1
Sample Rate : 44100
Precision : 8-bit
Duration : 00:00:00.39 = 17015 samples = 28.9371 CDDA sectors
File Size : 18.0k
Bit Rate : 374k
Sample Encoding: 8-bit Signed Integer PCM
Looks ok to me...
...and as I already wrote:
I could load them into my NerdSEQ w/o any complaints.
RE: loading sample problems - aork2 - 08-21-2021
I have not turnd off the nerd and it loaded all the samples, it should be better expleined in the manual,
I just take out the card and put it in back and it workd, i don't know, but four haours to get here
thanks for all the ansers any way
RE: loading sample problems - XORadmin - 08-21-2021
(08-21-2021, 09:34 AM)aork2 Wrote: I have not turnd off the nerd and it loaded all the samples, it should be better expleined in the manual,
I just take out the card and put it in back and it workd, i don't know, but four haours to get here
thanks for all the ansers any way
I think your issue is that you hot-plugged the sd-card. The SD Cards needs to initialize then first (mount) and often it needs a 2nd try until it reads correctly. ( I might raise the timeout here, but the caveat here is that the mounting process is also blocking. So if you play anything and want to replace samples after hot-plug, then it might stop playback until it is mounted/initialized.)
600 files is also a lot and I suggest to sort them into folders for much faster access.
RE: loading sample problems - XORadmin - 08-21-2021
Also the samples attached are indeed not a usual wave file format. The fact that mgd can hear them is because if the definition is not detected then it plays (best effort) it as 8 bit unsigned RAW. (And the NIST files attached even got a signed 8 bit coding which is not supported)
I understand that they are limitations in which wave files can be handled. But please don't forget that this is just an embedded system (I bet the stack to process wavefiles on a PC or MAC system is bigger than the whole NerdSEQ firmware
) and the wave file format is quite a big thing to process with all it's possibilities. So the NerdSEQ implementation is to support the most common wave-filetypes.