| Patents for H04R 3 - Circuits for transducers (18,190) |
|---|
| 07/25/2013 | CA2845107A1 Audio interface adapter device and audio signal receiving apparatus |
| 07/24/2013 | EP2617203A1 Non-contact cymbal pickup using multiple microphones |
| 07/24/2013 | CN203086714U Digital wireless microphone system |
| 07/24/2013 | CN203086713U Earphone interface circuit |
| 07/24/2013 | CN203086712U Receiver device for mobile terminal and mobile terminal |
| 07/24/2013 | CN203086711U Attached sound reproducing apparatus as accessories on collars of clothes |
| 07/24/2013 | CN203086710U Dual omnidirectional microphone array calibration system |
| 07/24/2013 | CN203086705U Computer sound box |
| 07/24/2013 | CN203086703U Plane resonance sound box |
| 07/24/2013 | CN203086693U Bluetooth headset |
| 07/24/2013 | CN203086679U Multifunctional earphone |
| 07/24/2013 | CN203082768U Bluetooth assembled lamp |
| 07/24/2013 | CN103222192A Signal processing device, signal processing method, and signal processing program |
| 07/24/2013 | CN103222189A Hearing aid with an H-bridge output stage and a method of driving an output stage |
| 07/24/2013 | CN103220600A Device for automatically adjusting volume of sounding box |
| 07/24/2013 | CN103220599A Converting method and converter for portable device headset interface and serial communication interface |
| 07/24/2013 | CN103220598A Audio interface adaptive device and audio signal receiving device |
| 07/24/2013 | CN103220597A Balancing device for sound field in vehicle |
| 07/24/2013 | CN103220592A Headsets and key control method thereof |
| 07/24/2013 | CN103219753A Method and intelligent terminal of power supply and communication to external equipment through audio interface |
| 07/24/2013 | CN101651732B Handsfree call apparatus, acoustic reproducing apparatus with handsfree call function, and handsfree call method |
| 07/24/2013 | CN101218847B 阵列扬声器系统以及阵列传声器系统 Array array speaker system and microphone system |
| 07/23/2013 | US8494177 Virtual microphone array systems using dual omindirectional microphone array (DOMA) |
| 07/23/2013 | US8494173 Integrated circuit with configurable output cell |
| 07/23/2013 | US8494171 Energy saving PWM sound device |
| 07/23/2013 | CA2695601C Audio conference system |
| 07/18/2013 | WO2013106407A1 Wireless audio player and speaker system |
| 07/18/2013 | WO2013105447A1 Loudness correction means and sound quality adjustment means |
| 07/18/2013 | WO2013104529A1 Device and method for calculating speaker signals for a plurality of speakers using a delay in the frequency domain |
| 07/18/2013 | US20130182885 Electrodynamic speaker and method for manufacturing the same |
| 07/18/2013 | US20130182859 Audio system with synthesized positive impedance |
| 07/17/2013 | EP2615851A2 Interconnected speaker system |
| 07/17/2013 | EP2615850A1 Audio recording device |
| 07/17/2013 | CN203072139U A vehicle loudspeaker voice generation control device |
| 07/17/2013 | CN203072138U Simulation microphone camera shooting linkage system |
| 07/17/2013 | CN203072137U Dual-purpose earphones adopting wired transmission?mode and wireless?transmission mode |
| 07/17/2013 | CN203072132U Multimedia?sound?box |
| 07/17/2013 | CN203063807U Electronic ringing device for automobile |
| 07/17/2013 | CN203059374U Coffee maker with speech control function |
| 07/17/2013 | CN103210664A Non-contact cymbal pickup using multiple microphones |
| 07/17/2013 | CN103210663A Transitioning multiple microphones from first mode to second mode |
| 07/17/2013 | CN103209382A Electronic device with faders |
| 07/17/2013 | CN103209379A Single-line programmable micro electromechanical system (MEMS) microphone and programming method and system thereof |
| 07/17/2013 | CN103209370A Electronic equipment and method for adjusting file sound parameters output by sound playing device |
| 07/17/2013 | CN103209369A Voice-controlled system of electronic device and related control method |
| 07/17/2013 | CN103208987A Starting up awakening method for external connection terminal of audio frequency device |
| 07/17/2013 | CN102036144B Signal processing system and method for calibrating channel signals supplied from an array of sensors |
| 07/17/2013 | CN101682809B Sound discrimination method and apparatus |
| 07/17/2013 | CA2801725A1 Management unit with microphone |
| 07/16/2013 | US8488812 Biasing circuit for a microelectromechanical acoustic transducer and related biasing method |
| 07/16/2013 | CA2676772C Method and apparatus for conserving battery power |
| 07/11/2013 | WO2013102499A1 Differential microphone and method for driving a differential microphone |
| 07/11/2013 | WO2013072554A3 Spatial visual effect creation and display such as for a screensaver |
| 07/11/2013 | US20130177198 Wireless Audio Player and Speaker System |
| 07/11/2013 | US20130177171 Pseudo bass generating apparatus |
| 07/11/2013 | US20130177166 Head-related transfer function (hrtf) selection or adaptation based on head size |
| 07/11/2013 | US20130177161 Sine wave generating device, digital signal processor and audio output device |
| 07/11/2013 | DE19847689B4 Vorrichtung und Verfahren zur dreidimensionalen Tonwiedergabe Apparatus and method for three-dimensional sound |
| 07/10/2013 | EP2613564A2 Focusing on a portion of an audio scene for an audio signal |
| 07/10/2013 | EP2613320A2 Frequency-specific determination of audio dose |
| 07/10/2013 | EP2612441A2 Buffering apparatus and method |
| 07/10/2013 | CN203057481U Anti-interference vocal apparatus |
| 07/10/2013 | CN203057480U Power amplifier wire |
| 07/10/2013 | CN203057479U Microcontroller-based vehicle-mounted voice-controlled sound system |
| 07/10/2013 | CN203057478U Active bass sound box |
| 07/10/2013 | CN203057477U Electronic system for connecting a three-pin earphone and a four-pin earphone |
| 07/10/2013 | CN203057476U Tension force detection-based intelligent switching control headphone |
| 07/10/2013 | CN203057475U Sounding circuit with filtering function |
| 07/10/2013 | CN203057474U Sounding device with dual-filtering function |
| 07/10/2013 | CN203057473U Active audio frequency amplifying circuit |
| 07/10/2013 | CN203057472U Dual-noise reduction sounding device |
| 07/10/2013 | CN203057471U Anti-interference loudspeaking circuit |
| 07/10/2013 | CN203057470U Filtering type active sounding device |
| 07/10/2013 | CN203057469U Noise reduction audio frequency device |
| 07/10/2013 | CN203057468U Anti-sound cracking audio frequency machine |
| 07/10/2013 | CN203057467U Low noise vocal apparatus |
| 07/10/2013 | CN203057466U Low noise active audio frequency machine |
| 07/10/2013 | CN203057465U Filtering noise-reduction audio frequency circuit |
| 07/10/2013 | CN203057464U Dynamic filtering sounding device |
| 07/10/2013 | CN203057463U Sound capable of calling |
| 07/10/2013 | CN203057462U Novel voice control sound box |
| 07/10/2013 | CN203057461U Communication sound equipment attached on automobile steering wheel |
| 07/10/2013 | CN203057460U Earphone capable of self volume adjustment |
| 07/10/2013 | CN203057459U Volume control system of automotive sound equipment |
| 07/10/2013 | CN203057458U Audio signal processing device of optical fiber monitoring system |
| 07/10/2013 | CN203057457U WIFI wireless transmission effect device signal processing circuit |
| 07/10/2013 | CN203057456U Control circuit of Bluetooth earphone |
| 07/10/2013 | CN203057435U Earphone used for Korean learning |
| 07/10/2013 | CN203057422U Electronic device |
| 07/10/2013 | CN203057088U Sound-cracking-resistant type active audio machine |
| 07/10/2013 | CN203057087U Microphone amplifying circuit |
| 07/10/2013 | CN203057086U Single transistor based microphone amplifying circuit |
| 07/10/2013 | CN203057085U Enhanced microphone amplifying circuit |
| 07/10/2013 | CN203057083U High-accuracy negative feedback active audio machine |
| 07/10/2013 | CN203057082U Voice frequency amplifying circuit with filtering function |
| 07/10/2013 | CN203055440U External touch screen song-selecting device for portable sound box |
| 07/10/2013 | CN1819716B Loud speaker with double magnetic pole and moving coil and its playing and controlling circuit |
| 07/10/2013 | CN103202039A Electronic device |
| 07/10/2013 | CN103200497A Sound production method of electronic frequency-dependent horn of silicon mike sensor |
| 07/10/2013 | CN103200496A Noise reduction recording device and method thereof |