ee 151 exp 7

ee 151 exp 7 - the low pass filter made me sound like I had...

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Cameron Kirby EE 151 section 3 December 7, 2006 Questions: Section 1 1) As a sound became increasingly lower (entering the sub human level of hearing) the sound quality degraded. Also, as the sound became increasingly higher (exiting the higher range of human hearing), the sound became increasingly painful to listen to. 2) The sine wave yielded and even harmonic signal frequency. 3) The decimation frequency had a factor of 3 for the 1kHz sawtooth waveform. I noticed no real change in sound, then again my ears aren’t the greatest. 4) The time domain signal for the 2-bit waveform contained 1002 cycles. The quantization of the frequency domain was 2-bits. 5) 0-5 was the more “pleasing” sound to me. Questions: Section 2 1) The filtering effects either helped or made things worse. The band pass filter made me sound somewhat normal, but very far away. The high pass filter made me sound like I was on an old, crappy radio. And,
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Unformatted text preview: the low pass filter made me sound like I had a really deep voice. 2) As the filters were applied to the original file, the plotted frequency spectra changed significantly. In the LPF, the frequency spectra appeared to have more lower frequency sounds. In the HPF, the frequency spectra seemed to have more higher frequency sounds. And in the BPF, the frequency spectra seemed to have less frequency altogether. Questions: Section 3 1) For the Auditorium preset, I sounded like I had an echo and the waveform starts out really large then decreases. For the Hangar preset, I again sounded like I had an echo, but this time the wave from went up and down as it had a generally negative slope. And for the distortion preset, I sounded distorted. The wave form for that one started out really low then went high, then appeared to go back down again. Waveforms: Section 2 Waves section 1 Waveforms Section 3...
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ee 151 exp 7 - the low pass filter made me sound like I had...

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