![]() Its modus operandi: a one piece system to play your CDs, the radio and wake you up in the morning… for £600. Please let me know what you want me to test next.How much do you like CDs? This may sound a strange question to ask in 2012, but when considering Bose’s high end yet deliberately retro take on the modern music system it is one that is impossible to ignore.īose product refreshes are rare and for that reason alone the ‘Wave Music System III’ arrives with a significant amount of buzz and media attention. Is this perhaps caused by what Jonr mentioned in his post above? Notice that the "Default Format" still shows "2 channel, 16 bit, 44100 Hz (CD Quality)". the Sound control panel looked like this: Then modified audiostream.h line 58 to "#define AUDIO_SAMPLE_RATE_EXACT 48000.0f" and recompiled/uploaded.ġ. Recompiled the same sketch leaving the samplerate at 44.1kHz. Then copied the teensy4 directory from Franks GitHub link into C:\Program Files (x86)\Arduino\hardware\teensy\avr\cores, to overwrite with the 5 modified files. Using an sine-generator program running on the PC showed a nice 1kHz sine on the scope. DATA 22 7 for secondary I2S busĪudioConnection patchCord1(usb1, 0, i2s1, 1) ĪudioConnection patchCord2(usb1, 0, i2s1, 0) when it works, it works It needs to be done one time only.Ĭode: // PCM5102 bd Teensy 3.x Teensy 4.x You have to close all Windows programs that use audio, too. Sometimes a disable/enable sequence is needed, or one has to choose the (deselected?) samplerate again. In this case, the easiest way ist to unplug the Teensy and use an other USB port.Īnd take a look at the audio control panel of the Teensy device. It still may happen that Windoes is too dumb. The way is to edit Audiostream.h and enter the samplerate there. USB does not accept "dynamic" change of the samplerate. How does one change the sample rate of the hardware when using the Teensy Audio Board? So, I'd like to try your stuff with as little Tympan stuff as possible. ![]() But, maybe there is an incompatibility between my stuff and your stuff that has nothing to do with your mods. I have run Tympan at 96 kHz many times, so I know that the Tympan runs fine at 96 kHz. My question: when using the standard Teensy Audio Board, how do you recommend that one tell the hardware what the new sample rate is? One needs to set the I2S clocks, right? Do the I2S clocks get set correctly based on the SAMPLE_RATE_EXACT used in AudioStream? Or does one need to manually command different I2S mult/div values?įor my Tympan, I know how to change the sample rate.and I did so.but I got distorted results. That is a weird number considering the block size is 128.but I don't know what the block size is over the USB. The spacing between discontinuities is about 96 samples. Notice that the waveform is definitely chopped up. I then whistled, which should be sorta like a sine wave. ![]() There was clearly my voice in there, but it was very distorted. Data streamed into Audacity and it recorded, but the audio was all distorted. I then tested at 96000 Hz and it didn't work. I recorded the audio on the PC in Audacity. I used the microphones on-board the Tympan and talked into them. ![]() I just tried at 44.1kHz by recording audio from my Tympan via USB to the PC.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |