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Description: MODERN TECHNIQUES OF POWER SPECTRUM ESTIMATION
BY
C. BINGHAM, M. D. GODFREY, and J. W. TUKEY
Reprinted from IEEE TRANSACTIONS
ON AUDIO AND ELECTROACOUSTICS
Volume AU-15, Number 2, June 1967
pp. 56-66
Copyright
c 1967 { The Institute of Electrical and Electronics Engineers, Inc.
PRINTED IN THE USA
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Size: 247808 |
Author: far |
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Description: S42L52 是一个 24 位 CS42L52 低功耗立体声编解码器，因其高度集成和高性能的音频输出而闻名。CS42L52 能够为外部扬声器的每个声道提供高达一瓦的高效 D 类放大，或者提供充足的能量向立体声耳机的每个声道输入 44 毫瓦功率，这使得 CS42L52 能够非常灵活地通过单电源运行其核心，可使 D 类放大器和电池直接连接，从而实现更高效的运行。这种 IC 对于便携式消费电子产品的作用非常理想，如：便携式媒体播放器、游戏设备、MP3 播放器相关产品、IC 录音机、数码相机和摄像机等。
这个是工程中实际使用的程序。-S42L52 is a 24-bit CS42L52 low-power stereo codec, due to its highly integrated and high-performance audio output is known. CS42L52 able to provide external speakers for each channel up to one watt high efficiency Class D amplification, or to provide sufficient energy to the stereo headphones 44 milliwatts per channel input power, which makes CS42L52 can be very flexible single-supply operation its core, will enable Class D amplifier and battery is connected directly to achieve a more efficient operation. This IC for portable consumer electronics products, the role is ideal, such as: portable media players, gaming devices, MP3 players, related products, IC recorders, digital cameras and camcorders.
This is the actual use of project procedures.
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Size: 928768 |
Author: 陈隆永 |
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Description: This the 3rdED_David_Salomon. This helps in understanding the most modern methods of compressing data (images, 1-D audio signals, etc) and the mathematical principles behind them.-This is the 3rdED_David_Salomon. This helps in understanding the most modern methods of compressing data (images, 1-D audio signals, etc) and the mathematical principles behind them.
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Size: 4871168 |
Author: korhal88 |
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Description: 使用OpenGL和MFC的音频接口 完成一个3-D的仿真房间: 床，衣柜，书桌，电动玩具，电脑等，包含Texture, Animation等。-The use of OpenGL and MFC-audio interface to complete a 3-D simulation of the room: bed, wardrobe, desk, electric toys, computers, etc., including Texture, Animation and so on.
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Size: 20820992 |
Author: Ye Li |
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Description: 双音多频 DTMF（ Dual Tone Multi-Frequency ）信号，是用两个特定的单
音频率信号的组合来代表数字或功能。在 DTMF 电话机中有 16 个按键，其中
10 个数字键 0 — 9 ， 6 个功能键 * 、 # 、 A 、 B 、 C 、 D 。其中 12
个按键是我们比较熟悉的按键，另外由第 4 列确定的按键作为保留，作为功能
键留为今后他用。 根据 CCITT 建议，国际上采用 697Hz 、 770Hz 、 852Hz 、
94lHz 低频群及 1209Hz 、 1336Hz 、 1477Hz 、 1633Hz 高频群。从低频群和高频群任意各抽出一种频率进行组合，共有 16 种组合，代表 16 种不同的数
字键或功能，每个按键唯一地由一组行频和列频组成-DTMF DTMF (Dual Tone Multi-Frequency) signal, is one of two specific
A combination of audio frequency signals to represent the number or function. In the DTMF telephone has 16 buttons, which
10 number keys 0- 9, 6 function keys*,#, A, B, C, D. 12 of them
Keys is more familiar with the keys, another set from the first four buttons as retention of a functional
Key left for future uses. According to CCITT recommendations, the international use of 697Hz, 770Hz, 852Hz,
94lHz low frequency group and 1209Hz, 1336Hz, 1477Hz, 1633Hz frequency group. From the low group and high-frequency group out of any one frequency for each combination, a total of 16 combinations, the number of representatives of 16 different
Character or function keys, each key uniquely by a group composed of row frequency and column frequency
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Size: 12288 |
Author: 李小勇 |
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Description: Symbian s60 player源代码，包括两个部分，其中播放和录音功能打包成动态的dll文件，在文件filebrowserUI中调用dll来播放和录音。filebrowser实现文件夹和文件的列表，可以遍历C盘和D盘，打开任意的文件夹，遍历文件夹下的文件，对文件进行播放、暂停、停止操作，播放过程中可以进行外置录音，录制的音频文件自动以当前时间来命名，保存在E盘当中。本程序中只遍历出WAV、mp3、amr的音频文件，要遍历其他文件可自己在代码处添加。程序代码由本人所作，在N73上通过测试，能够完美播放！-Symbian s60 player source code, consists of two parts, one playback and recording features packaged into a dynamic dll file, dll file filebrowserUI to call playback and recording. filebrowser to achieve a list of folders and files, you can traverse the C drive and D drive, open any folder, traverse the file folder, file to play, pause, stop operation, playback can be an external recording, recording The audio files are automatically named to the current time, save them in the E drive. This procedure only traverse a WAV, mp3, amr audio files, to traverse the other files can be added at the code yourself. Code made by me, tested on the N73 can play perfectly!
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Size: 72704 |
Author: Abel shen |
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Description: Lecture d un son audio et ajout de bruit au signal audio après filtrage.
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Size: 1024 |
Author: lala |
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Description: 电子设计大赛论文
A题 音频信号分析仪
B题 无线识别装置
C题 数字储存示波器
D题 程控滤波器
E题 开关稳压电源
F题 电动跷跷板设计
G 信号发生器
-Electronic Design Contest papers audio signal analyzer A Question Question wireless identification device B C D Question title digital storage oscilloscope programmable filter problem switching power supply E F G theme designed electric signal generator and so on seesaw
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Size: 9284608 |
Author: zoujiaji |
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Description: A Labview vi that can control Windows audio Volume in both playback an d recording direction
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Size: 17408 |
Author: Esben |
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Description: 有关d类音频功率放大的资料，供大家参考。望对大家有点帮助。-D audio power amplifier for information for your reference. We hope for a little help.
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Size: 376832 |
Author: 罗煦平 |
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Description: 摘 要:本文介绍了采用双声道音频A/D转换芯片CS5331A和TMS320VC5402 DSP组成的双声道音频采集系统
的设计。给出了系统的硬件设计方案,包括CS5331A与TMD320VC5402 DSP的接口电路和信号时序。在硬件方案
的基础上,给出了系统的总体软件流程,并详细介绍了DSP的多通道缓冲串行口(McBSP)和直接存储器访问(DMA)
的初始化设置,给出了相应例程。最后,给出了采集到DSP内存中的双声道音频数据的波形。
关键词:采集 DMA McBSP DSP
-Abstract: This paper describes the use of two-channel audio A/D conversion and TMS320VC5402 DSP chip CS5331A composed of two-channel audio acquisition system. Shows the system hardware design, including the CS5331A and TMD320VC5402 DSP interface circuit and signal timing. In the hardware solution, based on the given system' s overall software process, and details of the DSP multi-channel buffered serial port (McBSP) and direct memory access (DMA) initialization settings, gives the corresponding routines . Finally, given the collection to the DSP memory in two-channel audio data waveform. Keywords: acquisition DMA McBSP DSP
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Size: 188416 |
Author: ws |
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Description: 本设计允许用户使用CPLD作为SPI和I2C接口的桥接芯片。-This design enables an SPI-interface-equipped host to control data flow to
other devices such as an A/D converter, LED controller, audio processor
to read temperature sensors, hardware monitors, and diagnostic sensors,
that are on an I2C interface
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Size: 130048 |
Author: edison |
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Description: 一个非常好的电子通讯录。包括了查看联系人、增加联系人、增加音视频功能、通讯录设置、用户界面的３D切换几个功能。-A very good electronic mail list. Include view contacts, increase contacts, add audio and video functions, mail list settings, user interface 3D switching function.
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Size: 2096128 |
Author: 张健 |
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Description: Multipliers are one of the most important elements in digital filters such as Finite Impulse
Response (FIR) and Infinite Impulse Response (IIR) Filters. These filters are used in a
wide variety of Digital Signal Processing (DSP) applications such as A/D converters,
signal modulators, audio signal processing, multimedia, and process control just to name
a few
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Size: 1563648 |
Author: sfsfs |
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Description: AVR 单片机制作的D类功放，用AVR 自带的AD采样音频输入，产生调制的PWM波，驱动功率H桥，然后滤波成放大的具有驱动能力的音频信号，驱动喇叭播放音乐。完全用程序实现，里面存有正弦波的数据，也可以输出正弦波。-AVR microcontroller produced by the Class D amplifier, the AVR AD sampling the audio input, to generate the modulation of PWM wave-driven power H-bridge, and then filtering into the amplified audio signal of the ability to drive, drive speakers play music. Entirely in the program, which there are data of the sine wave, sine wave output.
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Size: 17408 |
Author: 杨剑 |
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Description: D类音频功放芯片max9768的IIC驱动程序，需要请下载。-Class D audio amplifier chip max9768 IIC driver, you need to download....max9768
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Size: 1024 |
Author: sky |
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Description: 嵌入式linux设备驱动是嵌入式系统中十分重要的组成部分。本书详细讲解了嵌入式linux的各种设备驱动，包括字符设备驱动、数字显示驱动、键盘驱动、a/d驱动、d/a驱动、lcd驱动、触摸屏驱动、can总线驱动、iic总线驱动、音频总线驱动、ide接口驱动、闪存芯片驱动、usb驱动、串口驱动、网络设备驱动等，并结合大量实例进行讲解，读者可以快速熟悉和掌握相关知识。
-Embedded linux device driver is a very important part of embedded systems. Book explain in detail a variety of embedded linux device drivers, including the character device driver, and digital display drivers, keyboard drivers, a/d drive, d/a driver, lcd-driven, touch screen driver, can bus driver, iic bus driver audio bus driver, ide interface driver, flash chip drivers, usb drivers, serial drivers, network device drivers, combined with the large number of examples to explain, readers can quickly become familiar with and acquire the relevant knowledge.
The book is rich in content, professional and practical, suitable for embedded system designers and university teachers and students to learn and use.
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Size: 13872128 |
Author: zhj |
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Description: 数字音频总线I2S总线规范，I2S spec，三线制-Many digital audio systems are being introduced into the consumer
audio market, including compact disc, digital audio tape, digital
sound processors, and digital TV-sound. The digital audio signals in
these systems are being processed by a number of (V)LSI ICs,
such as:
• A/D and D/A converters
• digital signal processors
• error correction for compact disc and digital recording
• digital filters
• digital input/output interfaces.
Standardized communication structures are vital for both the
equipment and the IC manufacturer, because they increase system
flexibility. To this end, we have developed the inter-IC sound (I2S)
bus – a serial link especially for digital audio.
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Size: 54272 |
Author: theshao |
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Description: PCM文件：模拟音频信号经模数转换（A/D变换）直接形成的二进制序列，该文件没有附加的文件头和文件结束标志。Windows的Convert工具可以把PCM音频格式的文件转换成Microsoft的WAV格式的文件。-PCM files: analog audio signal by the analog to digital conversion (A/D transformation) direct the formation of binary sequences, it did not attach the file header and file marks the end. Convert tool for Windows PCM audio file formats can be converted to Microsoft' s WAV format files.
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Size: 413696 |
Author: 吴迪 |
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Description: 20 W dual BTL class-D audio amplifier - STMicroelectronics-20 W 20 W dual BTL class-D audio amplifier - STMicroelectronics
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Size: 802816 |
Author: sus |
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