Platform: MATLAB Please show the completed matlab codes. Thank you so much. Impl
ID: 2082963 • Letter: P
Question
Platform: MATLAB
Please show the completed matlab codes. Thank you so much.
Implement a 5-channel equalizer that can read in an audio file (.wav format, 16kHz sampling rate), split into five frequency bands (channels), apply a desired gain in each channel, reconstruct the audio signal and save it as an audio file. The system should not introduce any perceptible distortion to the audio signal except for the desired gains in each channel. You should choose appropriate frequency ranges for the five channels.
Explanation / Answer
The Chorus effect simulates several voices or instruments played at once by adding multiple short delays with a small amount of feedback. The result is lush, rich sound. You can use the Chorus effect to enhance a vocal track or add stereo spaciousness to mono audio. You can also use it to create unique special effects.
Premiere Pro uses a direct-simulation method of achieving a chorus effect, making each voice (or layer) sound distinct from the original by slightly varying timing, intonation, and vibrato. The Feedback setting adds extra detail to the result.
Note:
To achieve the best results with mono files, convert them to stereo before applying the Chorus effect.
Bypass
Keyframeable option that specifies whether to apply or bypass the Chorus effect.
Custom Setup
Opens a mixer-style control panel that controls the properties with knobs.
Individual Parameters
Opens a set of parameter controls for the Chorus effect.
LfoType
Specifies wave type of Low Frequency Oscillator: Sin(e), Rect(angle), or Tri(angle).
Rate
Determines the maximum rate at which amplitude changes occur. With low values, the resulting voice slowly gets louder and quieter, like singers that cannot keep their breath steady. With high settings, the result can be jittery and unnatural.
Note:
High settings can produce interesting special effects (as in the Another Dimension preset).
Depth
Determines the maximum variation in amplitude that occurs. For example, you can alter the amplitude of a chorused voice so that it is 5 dB louder or quieter than the original. At low settings (less than 1 dB), the depth could be unnoticeable unless the Modulation Rate is set extremely high. At high settings, however, the sound could cut in and out, creating an objectionable warble. Natural vibratos occur around 2 dB to 5 dB. This setting is a maximum only; the vibrato volume would not always go as low as the setting indicates. This limitation is intentional, as it creates a more natural sound.