US Patent No: 7,155,385
Number of patents in Portfolio can not be more than 2000
Automatic gain control for adjusting gain during non-speech portions
Stats
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Dec 26, 2006
Issued date -
May 16, 2002
filing date -
10/146,742
serial no -
In Force
status
Importance
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Abstract
An estimate is made of the power of a speech portion of a speech signal that includes speech portions separated by non-speech portions, the power for the speech portion being estimated based on a power envelope that spans the speech portion. The gain of an automatic gain control is not adjusted during the speech portions.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 5,146,504 Speech selective automatic gain control | 27 | 1990 | |
| 5,666,384 Method and apparatus for mitigating noise in an output signal of an audio automatic gain control circuit | 5 | 1995 | |
| 6,370,500 Method and apparatus for non-speech activity reduction of a low bit rate digital voice message | 10 | 1999 | |
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| 6,314,396 Automatic gain control in a speech recognition system | 21 | 1998 | |
| 6,651,040 Method for dynamic adjustment of audio input gain in a speech system | 7 | 2000 | |
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| 5,592,545 Voice enhancement system and method | 21 | 1995 | |
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| 6,604,071 Speech enhancement with gain limitations based on speech activity | 10 | 2000 | |
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| 5,035,242 Method and apparatus for sound responsive tactile stimulation of deaf individuals | 226 | 1990 | |
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| 6,937,978 Suppression system of background noise of speech signals and the method thereof | 16 | 2001 | |
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| 2004/0172,242 Variable sensitivity control for a cochlear implant | 5 | 2004 | |
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| 6,321,194 Voice detection in audio signals | 20 | 1999 | |
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| 6,169,971 Method to suppress noise in digital voice processing | 9 | 1997 | |
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| 6,351,529 Method and system for automatic gain control with adaptive table lookup | 6 | 1998 | |
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| 5,267,322 Digital automatic gain control with lookahead, adaptive noise floor sensing, and decay boost initialization | 22 | 1991 | |
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| 6,308,155 Feature extraction for automatic speech recognition | 19 | 1999 | |
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| 5,854,845 Method and circuit for voice automatic gain control | 10 | 1996 | |
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| 5,838,269 System and method for performing automatic gain control with gain scheduling and adjustment at zero crossings for reducing distortion | 11 | 1996 | |
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| 5,583,969 Speech signal processing apparatus for amplifying an input signal based upon consonant features of the signal | 16 | 1993 | |
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| 6,363,343 Automatic gain control | 6 | 1998 | |
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| 6,266,632 Speech decoding apparatus and speech decoding method using energy of excitation parameter | 17 | 1999 | |
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| 6,351,731 Adaptive filter featuring spectral gain smoothing and variable noise multiplier for noise reduction, and method therefor | 46 | 1999 | |
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| 5,165,017 Automatic gain control circuit in a feed forward configuration | 26 | 1990 | |
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| 4,777,649 Acoustic feedback control of microphone positioning and speaking volume | 12 | 1985 | |
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| 5,680,075 Digital automatic gain control | 10 | 1995 | |
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| 4,747,143 Speech enhancement system having dynamic gain control | 31 | 1985 | |
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| 6,862,567 Noise suppression in the frequency domain by adjusting gain according to voicing parameters | 19 | 2000 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jun 26, 2014 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 26, 2018 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |