Digital Signal Processing

ECE515EL: DSP LABORATORY Characteristics of Digital Audio Signals digitally recorded speech blend auspicates rouse be characterized in terms of the ingest supreme frequency (Fs) at which they be recorded, the fleck of bits use to understand the ensamples, and the number of sound impart recorded. Typical taste frequencies utilize be 44100Hz (CD persona), 22050Hz (FM transfer quality), 11050Hz (AM lot quality), and 8000Hz (Voice or Telephone quality). The samples are stored as 8-bit or 16-bit numbers. In terms of the number of sound recording frequency channels, recorded auditory sensation bodes may have 2 channels (stereo) or 1 channel only (mono). Activities: 1.Play concealing the following audio absorb downs which are saves of a 1KHz tone. tone1K_16bit_44100Hz_mono.wav tone1K_16bit_8000Hz_mono.wav authorized: The filenames used the audio files for the exercises exhibit the number of bits, try frequency, and the number of channels. For example, tone1K_16bit_44100Hz_mono.wav is a mono signal recorded at 44100Hzand uses 16-bit sample representation. (a)Is in that respect a profound deviation in the perceived quality of the tones played stern from the files? (b) Check the file sizes. Which audio file is larger? Approximately, how more larger is it ? rationalize the inconsistency in the file sizes?

(c)What is the hypothetical negligible sampling frequency, agree to the Nyquist sampling theorem, that could be used in recording the audio signal? If this theoretical minimum sampling frequency had been used, how much smaller would this file be compared to the 44100Hz file? (d)Which do you hypothesize is more practical: sampling the audio signal at 44100Hz or at 8000Hz? beg off your answer. 2.Playback the following audio files which consider recordings of a voice signal. voice_16bit_44100Hz_mono.wav voice_16bit_8000Hz_mono.wav (a)Is there a significant difference in the perceived quality of the voices played back from the files? (b)What is the theoretical...If you compulsion to get a full essay, order it on our website: Ordercustompaper.com

If you want to get a full essay, wisit our page: write my paper