How to Sound quality?

Travel banjo,Audio encoding device, decoding device, method, and program,Bone conduction earphone,Audio processing method, device and terminal equipment,Volute-free air bellow and desktop range hood

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7 results about "Sound quality" patented technology

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Sound quality is typically an assessment of the accuracy, fidelity, or intelligibility of audio output from an electronic device. Quality can be measured objectively, such as when tools are used to gauge the accuracy with which the device reproduces an original sound; or it can be measured subjectively, such as when human listeners respond to the sound or gauge its perceived similarity to another sound.

Travel banjo

InactiveUS20050235805A1Facilitate compact storageEasy to transportBanjosEngineeringSound quality

A travel banjo optimized for sound quality, portablity and ruggedness. The neck, fingerboard and string scale are identical to a regular banjo. The neck is attached to the body with a thumbscrew. The body consists of a front and back plate which are fastened together mechanically. A commercial drum head is tensioned by the force of the front and back plates being drawn together, applying pressure to the head and the tone ring. A string clamp is attached by a thumbscrew to retain the strings and bridge in when the neck is removed. The strings are attached to string posts at the end of the neck travelling over the bridge to a set of rollers, which redirect the string path to the rear where the tuning mechanisms are mounted in a protected area. The head and bridge are similar to a regular banjo to provide an authentic banjo sound.

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Owner:FARRIS SAMUEL DAVID

Audio encoding device, decoding device, method, and program

InactiveCN1969318AFlexible adjustmentReduce bit rateSpeech recognitionSound qualityTrade offs

There are provided an audio encoding device and a decoding device capable of flexibly adjusting the optimal trade off between a code rate and sound quality. A variable frequency division encoding unit (110) includes: difference degree calculation units (101, 102, 103) for calculating the difference degree between the first and the second input signal according to the division methods A, B, C for dividing the frequency band into sub-bands; a selection unit (104) for selecting one of the selection methods; and a difference degree and division information encoding unit (105) for encoding the selected division method and the difference degree for each of the sub-bands in accordance with the selected division method. A variable frequency division decoding unit (210) includes: a division information decoding unit (202) for decoding the division information to know the division method; a switching unit (203) for outputting the difference degree code to one of the difference degree decoding units based on the division method; and difference degree decoding units (204, 205, 206) for decoding the difference degree code into a difference degree for each sub-band.

Owner:PANASONIC CORP

Bone conduction earphone

ActiveCN113490096ATo achieve the purpose of vibration transmissionEasy to driveEarpiece/earphone attachmentsEngineeringSound quality

The invention relates to a bone conduction earphone which comprises an earphone shell, the earphone shell is provided with a vibration transmission layer, the bone conduction earphone further comprises a shell and an energy conversion device, the energy conversion device is arranged in the shell, the energy conversion device is elastically connected with a PCB, the energy conversion device is connected to the shell in a suspended mode through the PCB, and the PCB is used for transmitting vibration brought by the energy conversion device. A connecting contact is welded on the PCB, the connecting contact is connected with a voice coil in the transduction device through a metal wire, the PCB is wrapped in the earphone shell, the PCB and a vibration transmission layer of the earphone shell form a vibration system, and the vibration system can transmit sound vibration generated by the transduction device to human tissues. The bone conduction earphone has the effects of improving the sound quality and volume of the bone conduction earphone and conveniently improving the efficiency of assembling the bone conduction earphone, and the positioning assembly is arranged in the earphone shell and used for enabling the PCB to be tightly connected with the vibration transmission layer.

Owner:SHENZHEN SANDE DACOM ELECTRONICS CO LTD

Audio processing method, device and terminal equipment

InactiveCN105848057AImprove playback sound qualitySolve the technical problem that the high-quality sound characteristics of digital headphones cannot be fully utilizedSignal processingTransducer circuitsRate limitingTerminal equipment

An embodiment of the invention provides an audio processing method, an audio processing device and terminal equipment. The an audio processing method comprises the steps of comparing a sampling rate of an audio signal with a preset sampling rate limiting value, and carrying out frequency raising treatment on the audio signal when the sampling rate of the audio signal is lower than the preset sampling rate limiting value, so that the sampling rate of the audio signal is matched with a sampling rate which can be decoded by a digital earphone. The audio processing method, the audio processing device and the terminal equipment solve the technical problem that high sound quality characteristic of the digital earphone cannot be fully exerted due to low sampling efficiency of the audio signal in the prior art is solved, and the playing sound quality of digital audio equipment is improved.