Easy To Use Patents Search & Patent Lawyer Directory

At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Patents are available using simple keyword or date criteria. If you are looking to hire a patent attorney, you've come to the right place. Protect your idea and hire a patent lawyer.

Searching: audio signal





Search by keyword, patent number, inventor, assignee, city or state:




Patent # Description
US-7,619,471 Class D amplifier with increased efficiency
The present invention is a method of operating a speaker by converting an audio signal to a pulse-width modulated signal that has a plurality of positive pulses...
US-7,619,467 Modulated triangular wave amplifier
The invention is a power amplifier circuit for providing a signal acceptable for use in audio amplifiers or similar applications without requiring a stable power...
US-7,617,298 Session initiation protocol enabled set-top device
A method and apparatus for handling subscriber services from different sources without requiring interaction with different devices. The present invention also...
US-7,617,282 Apparatus for converting e-mail data into audio data and method therefor
An apparatus and method are provided for converting an e-mail data into an audio data. The apparatus includes a communication connector connected with a...
US-7,617,110 Lossless audio decoding/encoding method, medium, and apparatus
A lossless audio encoding/decoding method, medium, and apparatus. The lossless audio encoding method includes converting an audio signal in a time domain into an...
US-7,617,109 Method for correcting metadata affecting the playback loudness and dynamic range of audio information
A coded signal conveys encoded audio information and metadata that may be used to control the loudness and dynamic range of the audio information during its...
US-7,617,100 Method and system for providing an excitation-pattern based audio coding scheme
An improved audio compression scheme is provided. The scheme uses an excitation pattern to more efficiently provide audio signal compression. Under the scheme,...
US-7,617,097 Scalable lossless audio coding/decoding apparatus and method
A scalable lossless audio coding/decoding apparatus and method are provided. The scalable lossless audio coding apparatus includes a lossy coding unit which...
US-7,617,096 Robust quantization and inverse quantization using illegal space
A quantizer for quantization of a vector comprises a codevector generator that generates a set of candidate codevectors and a memory for storing an illegal space...
US-7,617,095 Systems and methods for detecting silences in audio signals
Silences are detected when a local signal power is below a given fixed or relative threshold value, the duration of the local signal power being below the given...
US-7,617,012 Audio signal processing system
In a mixer system including: a plurality of mixer engines each provided with a programmable DSP; and a PC controlling operations of the respective mixer engines,...
US-7,616,973 Portable audio device having reduced sensitivity to RF interference and related methods
A portable audio device having reduced sensitivity to RF interference over a predetermined frequency range from an adjacent mobile wireless communications device...
US-7,616,866 Encoding apparatus of audio signal, audio disc and disc reproducing apparatus
DVD-video data and DVD-audio data are recorded in a DVD-Avd disc. The DVD-audio data is composed of an audio manager having an audio manager information, an...
US-7,616,773 Communication device with receiver enclosure
A communication device including a casing to be worn at the ear of a user, the casing including a microphone, a signal processing device, a receiver for...
US-7,616,760 Headset for use with a communication and/or multimedia device
A headset is proposed for use with a communication and/or multimedia device, said headset comprising an interface for receiving input data, a processing unit for...
US-RE40,960 Switched signal processing circuit
An expander circuit for decoding audio signals which were encoded in accordance with the BTSC multichannel sound system standard including DBX commanding is...
US-7,614,073 Digital headend and full service network for distribution video and audio programming
A digital headend architecture and full service network are provided to selectively demodulate and decode a variety of digital and analog feeds into baseband...
US-7,613,609 Apparatus and method for encoding a multi-channel signal and a program pertaining thereto
To encode multi-channel digital data by adjusting the number of bits allocated to each channel to perform entropy coding of the multi-channel data, there is...
US-7,613,607 Audio enhancement in coded domain
Method and apparatus for enhancing a coded audio signal comprising indices which represent audio signal parameters which comprise at least a first parameter...
US-7,613,605 Audio signal encoding apparatus and method
An audio signal encoding apparatus includes a frame dividing unit (1), an auditory psychological arithmetic unit (2), a filter bank unit (3), a scale factor...
US-7,613,603 Audio coding device with fast algorithm for determining quantization step sizes based on psycho-acoustic model
An efficient audio coding device that quantizes and encodes digital audio signals with a reduced amount of computation. A spatial transform unit subjects samples...
US-7,613,579 Generalized harmonicity indicator
The invention disclosed herein provides a method and apparatus for analyzing periodic signals so as to determine the degree of harmonicity in real time....
US-7,613,532 Systems and methods for improving the signal to noise ratio for audio input in a computing system
Systems and methods for improving the signal to noise ratio for audio input in a computing system are provided. Signal to noise ratio improvements are enabled...
US-7,613,530 Apparatus and program for setting signal processing parameter in an audio mixer
Scene data including a set of values of a plurality of signal processing parameters are stored in a memory. Adjusting values (offset values) of the parameters...
US-7,613,314 Mobile terminals including compensation for hearing impairment and methods and computer program products for...
A mobile terminal includes a processor that is programmed to provide a user of the mobile terminal with a hearing test and to determine a set of coefficients. A...
US-7,613,313 System and method for control of audio field based on position of user
A system and method for control of an audio field based on the position of the user. In one embodiment, a system and a method for audio reproduction are...
US-7,613,310 Audio input system
A method for reducing noise associated with an audio signal received through a microphone sensor array is provided. The method initiates with enhancing a target...
US-7,613,306 Audio encoder and audio decoder
An audio encoder, generating a stereo signal based on a multi-channel signal, includes a downmix unit for downmixing a multi-channel signal exceeding two...
US-7,613,078 Information recording medium, information recording and/or reproducing apparatus and method, and program...
An information recording medium is provided with: an object data file for storing object data which constitutes a series of content information, such as picture...
US-7,612,793 Spatially correlated audio in multipoint videoconferencing
The disclosed method provides audio location perception to an endpoint in a multipoint videoconference by providing a plurality of audio streams to the endpoint,...
US-7,612,608 Sigma-delta based Class D audio or servo amplifier with load noise shaping
An amplifier capable of driving an analog load is provided. The amplifier can be constructed and arranged to operate as at least one circuit selected from the...
US-7,612,276 Method and system for synthesizing electronic transparent audio
A method and system for synthesizing electronic watermarks is disclosed. The method includes generating electronic watermark sounds for music data by converting...
US-7,612,275 Method, apparatus and computer program product for providing rhythm information from an audio signal
An apparatus for providing a beat and tatum tracker includes an accent filter bank, a periodicity estimator, a period estimator and a phase estimator. The accent...
US-7,611,367 Multimedia cable
A multimedia cable includes a casing, a terminal pin, an audio signal unit, a video signal unit, and a control lever. The terminal pin is mounted to the casing...
US-7,610,205 High quality time-scaling and pitch-scaling of audio signals
In one alternative, an audio signal is analyzed using multiple psychoacoustic criteria to identify a region of the signal in which time scaling and/or pitch...
US-7,610,203 System for recording and playing audio signals provided on a photograph
A system for recoding and playing an audio signal provided on a photograph. The system includes a camera having a sensing system for sensing an image and...
US-7,610,199 Method and apparatus for obtaining complete speech signals for speech recognition applications
The present invention relates to a method and apparatus for obtaining complete speech signals for speech recognition applications. In one embodiment, the method...
US-7,610,196 Periodic signal enhancement system
A signal enhancement system improves the understandability of speech or other audio signals. The system reinforces selected parts of the signal, may attenuate...
US-7,610,013 Wireless audio for entertainment systems
A set top box comprises a signal receiver that includes a front end that receives broadband signals, and a tuner that tunes a channel including audio and video...
US-7,610,012 Radio vision electronic network/analog output/viewing system
A system for AM broadcasting, and listing to audio, as well as, viewing slow scan pictures, by using an ordinary AM receiver and a slow scan video converter. The...
US-7,609,835 Digital media cartridge system and method
A digital media cartridge contains both a controller and memory where the memory stores a digital representation of video and sound in compressed, encrypted...
US-7,609,828 Telephone terminal, call system and terminal control program
A telephone terminal capable of keeping a line to the other party's telephone terminal connected through a telephone line network in a connected state even after...
US-7,609,173 Audio-visual point-of-sale presentation system and method directed toward vehicle occupant
An audio-visual presentation system delivering a presentation to a vehicle passenger compartment is provided that includes a video display mounted external to a...
US-7,607,077 Mobile communication terminal and operating method thereof
The present invention relates to a mobile communication terminal and operating method thereof in which data sync error occurring when multimedia data is played...
US-7,607,017 Embedding data in material
A method of transferring information signals representing still images, video audio and/or other data comprises sending, the information signals to a recipient...
US-7,606,872 System and method for integrated, multiple-remote controlled computer media server
A system and method providing a media server system are disclosed. A software module for storage on a computer and operable by the computer is provided to...
US-7,606,711 Audio signal processing device, signal recovering device, audio signal processing method and signal recovering...
The pitch extracting part generates a pitch waveform signal in a manner making the time interval of the pitch of the input audio sound data to be the same. After...
US-7,606,543 Signal quality indicator apparatus and method particularly useful for mobile telephones
The quality of radio frequency signals received at a mobile phone or cellphone is sampled. The results are employed to produce a human discernible indication...
US-7,606,382 BTE/CIC auditory device and modular connector system therefor
An earpiece auditory device is described which includes a behind-the-ear component shaped to fit behind the ear of a user. The behind-the-ear component can also...
US-7,606,380 Method and system for sound beam-forming using internal device speakers in conjunction with external speakers
A method and system for sound beam-forming using internal device speakers in conjunction with external speakers provides a low cost alternative to present...
← Previous | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | Next →

File A Patent Application

  • Protect your idea -- Don't let someone else file first. Learn more.

  • 3 Easy Steps -- Complete Form, application Review, and File. See our process.

  • Attorney Review -- Have your application reviewed by a Patent Attorney. See what's included.