FIELD: instrument making.
SUBSTANCE: proposed method consists in transposing input signal upward in frequency range, limited by amplitude, and subjected to frequency detection by means of band filter connected to frequency detector, to isolate input signal instantaneous frequency oscillations higher than those of acoustic signal. Said signals are amplitude detected, and low-pass filter and comparator are used to generate control signal equal to zero if HF signal exists and equals zero in case no HF signal exists. This control signal is multiplied with input signal delayed for synchronous operation.
EFFECT: higher quality of sound signals transmitted over analog communication channels and readability.
2 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR PROCESSING ACOUSTIC SIGNALS | 0 |
|
SU1443182A1 |
| METHOD AND DEVICE FOR PRECISE ANALOG COMPRESSION OF PORTION OF FREQUENCY RANGE OF AUDIO SIGNALS | 2003 |
|
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|
SU1543454A1 |
| SOUND SIGNAL PROCESSING DEVICE | 0 |
|
SU1338077A1 |
| METHOD AND DEVICE FOR GENERATING SPEECH VOWELS USING NOISE-LIKE SOUNDS OF ESOPHAGEAL VOICE | 2005 |
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RU2320025C2 |
| METHOD AND DEVICE FOR PRECISE ANALOG DIVISION OF INSTANTANEOUS FREQUENCY OF SIGNALS | 1997 |
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| DEVICE FOR CONVERTING DYNAMIC RANGE OF ACOUSTIC SIGNALS | 0 |
|
SU1598179A1 |
| METHOD AND DEVICE FOR THRESHOLD COMPRESSION OF DYNAMIC VOICE SIGNAL RANGE WITH AUTOMATIC THRESHOLD MEASURING | 2007 |
|
RU2353056C2 |
| DEVICE FOR RECOGNIZING RADIO SIGNALS | 0 |
|
SU1304045A2 |
