HARK FORUM › Generating a Measurement-based Transfer Function for RASP-LC › Reply To: Generating a Measurement-based Transfer Function for RASP-LC
We are happy to see that everything worked out for you.
It is not ideal for any noise to be present when recording the TSP signal. If the recording contains noise, it will reduce the performance of both sound separation and localization.
Based on the information and example you have provided, it seems you might be having some electrical noise issues.
Although we do not know the core cause of the problem, we can provide you with some possible solutions.
If the noise can be heard through the speaker, please try the following solutions:
1. If the TSP response is being played through a PC, use a device that is less susceptible to noise, such as a USB audio device.
2. If you played the audio using an amplifier, try using another one.
3. In both cases the volume should be set between 20% and 80%. The reason is that distortion tends to occur with characteristics near the limit value of the amplifier.
4. If you are supplying power from an outlet, try changing it to battery-powered.
If the noise can only be heard after the TSP signal has been recorded, please try the following solutions:
1. Make sure that the microphone cables are not close to a power supply or related equipment such as AC adapter and/or radio communication equipment (radio).
2. Please check whether the wiring of the effected microphones are loose.
3. Please check whether the wiring of the effected microphones are not entwined with other wires.
4. If you have spare microphones, please try replacing the effected microphones.
5. Please change the USB port where RASP-LC is connected.