These audio samples were recorded to demonstrate the advantage of using GainForward on the A20-Mini versus traditional gain staging found on other analog and digital wireless systems. All files were recorded from the same takes on an 833 via an A10-RX in an SL-2 using a pair of Shure TwinPlex TL46 lavalier microphones.
These are the raw isolated files from the 833 and have not been altered from the original recordings.
Included in the download:
Whisper to Scream A10.wav: The A10-TX gain is set to 40 dB for the take. The first two lines are whispered then the trim gain is reduced to -17 dB on the 833. Notice that even though the trim gain is reduced, the transmitter gain is still too high and yields an unusable distorted file.
Whisper to Scream A20.wav: Using GainForward there is no gain to be set on the A20-Mini. The trim gain on the A20-Mini channel on the 833 is reduced to -2.5 dB. When the shouting starts the audio is unclipped and usable.
Scream to Whisper A10.wav: The A10-TX gain is set to 0 dB for the take. The first two lines are shouted then the trim gain is increased to 47 dB for the whispered portion. Increasing the trim gain drastically brings up the noise floor present on the A10-TX.
Scream to Whisper A20.wav: For the whispered section the trim gain on the A20-Mini channel on the 833 is increased to 44 dB, which yields a usable file with no added noise.
Watch the full test with leveled audio here: