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參數(shù)資料
| 型號： | CMI-8738 |
| 廠商： | C-Media Electronics Inc. |
| 英文描述： | C3DX PCI-Based HRTF 3D Extension Positional Audio Chip |
| 中文描述： | C3DX基于PCI的HRTF的3D定位音效芯片擴展 |
| 文件頁數(shù)： | 14/28頁 |
| 文件大?。?/td> | 512K |
| 代理商： | CMI-8738 |
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C-MEDIA ELECTRONICS INC. Tel:886-2-87731100
Fax:886-2-87732211
URL : www.cmedia.com.tw
Products and company names mentioned here are the trademarks of their respective owners.
CMI-8738/PCI-SX AUDIO Specification
Ver. 1.2
C3D HRTF Positional Audio Technology
C3D technology uses an audio filter called Head Related Transfer Functions (HRTFs), which
is licensed from CRL(Central Research Lab).
The basic concept of C3D is: since we can
hear sound three dimensionally in the real world using our two ears, it must be possible to
regenerate the same sound effect from two loud speakers.
What is HRTF ?
HRTF (Head Related Transfer Functions) is a set of audio filters which can vary locations of
sound effects (spatial hearing cues) in three-dimension measured from the listener's
eardrum.
People can use this technology and special digital signal processing to re-create spatial
hearing cues, so as to makes the ears hear a realistic and three-dimensional sounds coming
from a pairs of loud speakers or headphones.
There are several listening cues which allow people to hear
sounds three-dimensionally :
(I).
Spatial Hearing : Primary 3D-cues
1. IAD
The head shadowing effect creates differences in the amplitudes of the sound signals
arriving at each ear from the source.
The effects of diffraction are most noticeable in
the range between about 700 Hz to 8 KHz, where the A and S functions periodically
converge and diverge gently.
This Inter-aural Amplitude difference (IAD) is one of the
primary 3D sound cues.
HRTF 3D Positional Audio Technology White-Paper
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CMI8787 | High Performance PCI Audio Processor |
| CMI8788 | High Performance PCI Audio Processor |
| CMLSH2-4LSB | 0.2 A, 40 V, 4 ELEMENT, SILICON, SIGNAL DIODE |
| CMLZDA36V | 36 V, SILICON, UNIDIRECTIONAL VOLTAGE REGULATOR DIODE |
| CMO3CMC-FREQ | CRYSTAL OSCILLATOR, CLOCK, 1.5 MHz - 156.25 MHz, CMOS OUTPUT |
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參數(shù)描述 |
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| CMI8768+ | 制造商:CMEDIA 制造商全稱:CMEDIA 功能描述:PCI 8CH Integrated Sound Chip |
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| CMI-9650C-030 | 功能描述:DC Buzzer Single Tone 2.85kHz Magnetic 2 ~ 5V 78dB @ 3V, 10cm 制造商:cui inc. 系列:CMI 包裝:* 零件狀態(tài):有效 驅(qū)動器電路:指示燈，內(nèi)部驅(qū)動 輸入類型:DC 電壓 - 額定:3V 電壓范圍:2 ~ 5V 頻率:2.85kHz 技術(shù):磁性 工作模式:單音調(diào) 持續(xù)時間:- 聲壓級:78dB @ 3V，10cm 電流 - 電源:15mA 端口位置:頂部 工作溫度:-20°C ~ 60°C 認可:- 等級:- 安裝類型:* 端接:* 大小/尺寸:* 高度 - 安裝（最大值）:* 標準包裝:50 |
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