audio frequency 中文意思是什麼
audio frequency
解釋
【無線電】（成）聲頻（率）。-
An electromagnetic wave of audio frequency produced by atmospheric disturbances such as lightning, having a characteristically decreasing frequency responsible for a whistling sound of descending pitch in detection equipment
嘯聲干擾一種由於諸如閃電等大氣干擾而產生的音頻電磁波，具有典型的逐漸減弱頻率的特徵，該頻減引起了檢波設備中調逐漸下降的嘯聲 -
Purpose : audio frequency power amplifier applications
用途:用於音頻功率放大。 -
Audio frequency transistor train dispatching telephone
音頻晶體管列車調度電話 -
Vol - adj （ 42 ） control the volume of audio frequency output
控制音頻輸出音量的大小。 -
The audio frequency hardware card
Sn - 6004av系列視音頻硬體壓縮監控錄像卡 -
5. possess the output socket of audio frequency equipment
7 .具有9位led系統音頻功能指示燈 -
Audio frequency overlay solid state track circuit
固態間頻疊加軌道電路 -
A kind of general audio frequency periodic noise suppressor
一種通用的音頻周期性噪聲抑制器 -
Type bcc audio frequency output transformers
Bcc型音頻輸出變壓器 -
4. have the input end of audio frequency and output end of record
4 .配有音頻輸入端，配有錄音輸出端 -
Support 3d audio frequency to deal with
支持3d音頻處理。 -
A card chinese red army soldier 8 groups video frequencies, do not have audio frequency, the h. 264 compression way, the single system supports 24 groups
一卡八路8路視頻無音頻， h . 264壓縮方式，單系統支持24路。 -
( 3 ) study the segmentation and recognition of audio frequency signal. audio signal can be divided into segments based on zero - crossing rate. ( 4 ) a audio recognition arithmetic based on mfcc is proposed
音頻信號的處理作為項目的一部分，根據要求實現了對單一音頻信號的識別，用vc6 . 0來實現。 -
Compression coding principle and facture of digital audio frequency technique mp
的壓縮編碼原理與製作方法 -
In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab
針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。 -
Harmonic distortion is one of the most common non - linear distortions, and it affects the playback performance of audio devices directly. harmonic distortion graph reflects the distortion distribution in the whole audio frequency range
諧波失真是音頻設備最常見的一種非線性失真，它直接影響到音頻設備的重放效果，諧波失真曲線圖反映出設備在整個音頻范圍內的失真分佈情況，是衡量設備性能的重要參數。 -
Verification regulation of audio - frequency signal generators
聲頻信號發生器檢定規程 -
Audio - frequency telegraphy
音聲周波電信 -
Based on the tuning technology of beiliu and lingshan timbals, and with the guidance of disk vibration formula, use the modern equipment to attune the new - casted majiang timbals then analyses their audio frequency. it proves the timbal, which is similar to bian - zhong ( chimes ), also can be attuned
以古代北流型和靈山型銅鼓的調音技術為基礎，圓板的振動公式為指導，利用現代工具對新鑄造的麻江型銅鼓進行調音和音頻分析，初步說明銅鼓與中原的編鐘相似，也是可以進行調音的 -
Due to too much short sustained time duration of oscillation for the blades and too wide distribution of oscillation frequency over the audio frequency range, a procedure of variable gate frequency measurement has been applied to the design of frequency measuring instrument with a micro - - controller unit ( mcu ) as its core. this procedure features a high precision and rapid speed
由於葉片振動持續時間很短，且振動頻率在音頻范圍之內分佈較廣，故在設計以單片機為核心的測頻儀時採用了變閘門測頻法，該方法具有精度高、速度快的優點。
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