物理硬件5.1耳机E95 E96小小体验和内置芯片型号探究

mapleo · 发表于 2009-4-15 13:02

本帖最后由 mapleo 于 2009-4-15 19:56 编辑

这几天想搞个多声道的耳机看电影，看到一个本土品牌的2个型号的耳机宣称是硬件支持5.1的耳机，各有特色，价格也很便宜，于是把这两个型号都买下来。

今天上午E95先到货，包装盒很大很实在，迫不及待的插上耳机，装了官网最新驱动，简单设置了下，看了几部DTS的电影，的确完美支持5.1，每边有3通道独立的腔体，的确效果不错，低音没有想象的强，不过震动效果弥补了一些，玩了几个游戏，效果也确实很好，感觉更加投入。

然后下午E96到货了，包装盒比E95小了几圈，立刻插上试听，由于E95 E96的内置声卡芯片是一样的，驱动也一样，所以直接插上不需要设置，打开几个相同的上午试听E95的电影，发现的确和网上说的一样，E96比E95效果差了点，特别是低音和震动部分很明显能感觉到没有95强烈。不过E96优点在于外观，有金属罩子在两边喇叭上，看上去时尚点，不过仔细观察发现做工比E95差了点，特别是和耳朵接触的那部分，E95的质地要柔软的多。E96就是很一般的绒布，比较粗糙。但是整体重量E96比E95轻，耳朵孔位很大而且是椭圆形这点不像E95又圆又小，因此佩戴起来也比E95舒适，更适合长时间佩戴。

价格呢，E96比E95便宜10块钱。总之，由于本人对音质要求不高，再加上多声道对看电影的音效支持比较到位，此外这2个耳机绝对对得起它们的价格，所以我对E95 E96还是比较满意的。

另外，经过本人调查研究终于知道E95 E96的内置声卡音效芯片型号

首先从驱动界面上能看上去是CMEDIA的某款芯片，但不知道具体是什么芯片型号

后来到CMEDIA的网站去研究了一番，发现符合用于外置的USB声卡的芯片支持8声道的只有2款，这两款中有一款是支持DOLBY认证的，应该不是，还剩下一款应该就是E95 E96内置USB声卡所采用的音效芯片了，详细资料如下

新推出的CM6308主要是针对USB耳机和声卡：2DAC、2ADC、是建立在CM108的基础上生产出来的，主要功能是支持VISTA系统

CM6308 USB Audio Solution For Multimedia and Instant Messaging Applications

The C-Media CM6308 provides an ideal solution for USB headphone, handset, and display phone products, as well as other PC audio and instant messaging applications. It is a highly integrated chip with a wide range of USB audio and telecom voice control capabilities. The CM6308 combines the audio controller and codec, and also integrates I2C and SPI interfaces, for interfacing with external MCU, LCM or DSP chips. Furthermore, the manufacturer string, product string, serial number, product ID, vendor ID, and initial playback and recording volumes can all be customized by interfacing with an external EEPROM.

Instant messaging and VoIP software are gaining widespread popularity, as they provide real-time audio/video communication in a cost-effective manner. C-Media not only provides the single chip hardware solution for audio peripherals, but also software middleware that enhances instant messaging programs.

All essential analog and digital modules are embedded in in the CM6308, including a stereo DAC and stereo ADC, headphone/speaker driving capability, Dynamic Range Compression, Linear microphone gain control, PLL, regulator, USB transceiver, 12 MHz crystal, and power on reset circuit. The CM6308 supports sampling rates of 8KHz, 16Khz, 44.1KHz and 48KHz, with high quailty 16 bit resolution.

Vendors can use the 12 GPIO pins to create a 36 key matrix scan for keypad control functions, saving additional componment cost. Many features are programmable with the external EEPROM and MCU interfaces. Furthemore, MCU/EEPROM/GPIO can easily be controlled through the HID software interface. The buzzer output pin can be easily controlled and changed through software for different frequencies and patterns. In addition, audio adjustments can be made through HID volume control pins. 3 LED indicator pins are supported, to provide more flexible status reporting (On / Off / Operation / playback mute / recording mute) and controllable flash times (using PWM).

mapleo · 发表于 2009-4-15 13:03

Features

l USB spec. 2.0 Full speed compatible and USB IF certification
l USB audio device class spec. 1.0 and USB HID class spec. 1.1 compliant
l Supports control, interrupt and isochroous data transfers

l USB suspend/resume and remote wake-up support
l Embedded USB transceiver and power-on reset circuit
l Single 12MHz Crystal Input with On-chip PLL
l Bus-power and self-power mode options supported
l High-power (500mA) and Low-power (100mA) mode options supported
l For Mixer disable mode, USB Audio Function Topology has 3 input Terminals, 2 Output Terminals, one Mixer Unit, one Selector Unit and 4 Feature Units.
l Supports one Control Endpoint, one Isochroous Out Endpoint, one Isochroous In Endpoint, and one Interrupt In Endpoint
l Serial EEPROM programming interface supported for customization of PID/VID/Product string/Manufacturer string
l EEPROM interface support 24C02 data format
l 2CH DAC Input
-- DAC sampling rate from 8Khz, 16Khz, 44.1Khz to 48Khz with 16-bit resolution
-- Dynamic Range: 95db, THD+N: -85~-91db
-- Headphone output buffer
-- I/F format: Left justified, SPI control interface
-- 1.2 Vrms biased at 2.25V output swing
l 2 CH ADC Input
-- ADC sampling rate from 8Khz, 16KHz, 44.1KHz to 48KHz with 16-bit resolution
-- Dynamic Range 88db, THD+N -79db ~ -84db
-- I/F formateft justified, SPI control interface
-- Digital Linear Microphone Gain Control function (-6db~33db)
-- 1.0 Vrmsbiased at 2.25V input swing
l Supports Stereo Microphone/ Stereo Mixer function/ Playback with soft-mute function
l Microsoft HID Volume control with Vol_Up, Vol_Dn, Playback_Mute and Record_Mute
l Support SPI & I2C (Master/Slave) control interface for interfacing with external controllers
l MCU read/write support 8 bytes data transfer bandwidth with I2C interface.
l I2C interface support extra interrupt pin INT
l MCU / EEPROM / GPIO control via HID / Vendor command interface
l Embedded Buzzer Function controlled through registers, supporting different patent and frequency settings
l 3 LED indicator pins:
-- 1.On / Off / Operation
-- 2.Playback mute
-- 3.Recording mute
l Supports 12 GPIO pins via HID for 36 key matrix application
l Embedded Power-On-Reset Block
l Single 5V power supply with embedded 5V to 3.3V regulator
l Embedded Anti-Pop Circuit with Internal Feedback Structure
l Industry standard LQFP 64 Pin package
l Compatible with Win2000 SP1~SP4 / WinXP SP1~SP2 / Vista Basic & Premium logo without additional driver
l Plug and play support for MAC OS X
l Plug and play support for Red Hat and Fedora Linux
l Supports Hardware SDK tool for third-party software or soft-phone development
l Instant Message software middleware supporting with：
-- Advanced middleware for Windows with AM, VM, Call-forward and Magic voice functions
-- Basic middleware application for MAC OSX and Linux platforms
-- IM support for Skype, MSN, Yahoo, GoogleTalk, AIM and QQ, ..etc.
-- Xear 3D Sound technology on Windows platform (with C-Media’s patented driver)
-- EnvironmentFX, Speaker Shifter and Virtual 7.1CH effects
-- 10 band Equalizer and karaoke functions

mapleo · 发表于 2009-4-15 17:57

updated experience

酷风 · 发表于 2009-4-15 21:19

那么大段e文谁看呀！

mapleo · 发表于 2009-4-15 21:46

随便看看，做个参考呀

chenxy · 发表于 2009-4-16 00:39

原来不光是耳机，还是个声卡？

mapleo · 发表于 2009-4-16 01:38

INTEGRAED USB EXTERNAL SOUND CARD

urp · 发表于 2009-4-16 23:13

lz你全搞错了
e96就是以前的st1603.很重很难看,夏天带会很热,而且第一批1603麦克风还有严重的问题
我买过1603,换过一次,受不了又出掉了
前一阵入了e95.没有了麦克风问题.声场能比原来的1603好点,不过也是半斤八两
另外这三个耳机的芯片其实都是一样的就是cm106,是很久以前的usb声卡芯片

mapleo · 发表于 2009-4-17 00:16

CM106支持VISTA吗

mapleo · 发表于 2009-4-17 00:24

官方网站上E95 96的驱动和1603的驱动是不一样的，所以应该芯片不是一样的

urp · 发表于 2009-4-18 11:22

官方网站上E95 96的驱动和1603的驱动是不一样的，所以应该芯片不是一样的
" Q1 r3 k) X4 g3 [# emapleo 发表于 2009-4-17 00:24

这是硕美科的障眼法而已
你解压缩驱动包.自己看看吧

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物理硬件5.1耳机E95 E96小小体验和内置芯片型号探究

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