We build musical instrument amplifiers. We would like to perform spectral analysis on the signal as it progresses through the amplifier to see where harmonics are injected, etc. Here is roughly the process:
1. Sample instrument signals are fed into the amplifier
2. Signals are recorded in approx 4 places through the amp. Signal levels vary from 100mV to 300V
3. Signals are saved and converted to WAV file format
4. Signals are then post processed using audio spectral analysis software.
And some constraints:
- Signals need to have high sample size to ensure fidelity with analysis software (16bit OK, 24 bit is best)
- Signal aquisition needs to be of high impedance so as to not load amp circuit down
We are currently using BitScope, but it does not have high enough sample size to give us the information we want.
We have also looked at using high end audio interfaces, which have high sample size, but unfortuanately are low-Z input and also require pre-amplifiers.
Can you suggest a product of yours that can help?
thanks
Don