Michael Liesenberg
Member
Hi,
i am using my custom audio codec and sampling at 192kHz.
After sampling i am doing an average/downsampling to 48kHz and my audio signal goes to the PC.
Everything is working fine. But now i want to increase the sampling rate to 384kHz but the signal is not the same:
This is a picture of a 1kHz sine wave at 192kHz with average to 48kHz:
This is a picture of a 1kHz sine wave at 384kHz with average to 48kHz:
This is a picture of a 1kHz sine wave at 768kHz with average to 48kHz:
Is the interrupts load for the Teensy 4.0 too much?
To reduce the interrupt event i would like to increase the AUDIO_BLOCK_SAMPLES. If i set it to 512 at 768kHz Sampling Rate with 48kHz average the signal looks like this:
Any idea? What could be the problem?
i am using my custom audio codec and sampling at 192kHz.
After sampling i am doing an average/downsampling to 48kHz and my audio signal goes to the PC.
Everything is working fine. But now i want to increase the sampling rate to 384kHz but the signal is not the same:
This is a picture of a 1kHz sine wave at 192kHz with average to 48kHz:
This is a picture of a 1kHz sine wave at 384kHz with average to 48kHz:
This is a picture of a 1kHz sine wave at 768kHz with average to 48kHz:
Is the interrupts load for the Teensy 4.0 too much?
To reduce the interrupt event i would like to increase the AUDIO_BLOCK_SAMPLES. If i set it to 512 at 768kHz Sampling Rate with 48kHz average the signal looks like this:
Any idea? What could be the problem?