5 ms·
While the 30/33 kHz inter modulation test is interesting, how would the 30/33 kHz tones get there in the first place? Aren't there low pass filters and shieldin
by bjt2n3904 12y ago
While the 30/33 kHz inter modulation test is interesting, how would the 30/33 kHz tones get there in the first place? Aren't there low pass filters and shielding on most studio equipment to attenuate EMI? Not to mention, the inter modulation products are 60 dB below the 30/33 kHz tones, I'm sure you wouldn't be able to hear them...
- CUViper 12y agoI think the point is that some people assert that they want the ultrasonics, as if they could tell the difference, so you wouldn't filter it. Then the presence of those ultrasonic tones creates the modulation in a range that you can hear. Likewise, the 60dB difference doesn't matter because you can't hear the signal at all, so you're going to notice the noise.