The sample rate is 8kHz, which means the Nyquist frequency is 4kHz. Slowing it back down won't sound good, but frequencies below 400hz will be present. Here's

The sample rate is 8kHz, which means the Nyquist frequency is 4kHz. Slowing it back down won't sound good, but frequencies below 400hz will be present. Here's a 8kHz .wav slowed down to 1/10: http://dump.elektronaut.no/post/ak52_1x.wav http://dump.elektronaut.no/post/ak52_1x.wav edit: You probably need a subwoofer or a decent pair of headphones to appreciate the rumble.