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參數(shù)資料
| 型號(hào)： | 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(kuò)展 |
| 文件頁數(shù)： | 16/28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
3. Pinna Effects
It has been presumed by several researchers that the convolutions of the pinna create
the spectral features which constitute the 'height' cues.
In practical experiments by
Gardner, in which different parts of the pinna were occluded, and then the ability of a
number of subjects to identify sound source positions at different heights was tested, it
was shown that the different features all contributed by different amounts.
For example,
if the fossa is excluded, then height localization capability is impaired, but not totally
extinguished.
It would be reasonable to conclude that it is the combined effect of the
pinna convolutions which create the various localization cues, and it is not valid - or
logical - to attempt to assign particular spatial capabilities with individual physical
features.
(II).
Spatial Hearing : Secondary 3D-cues (shoulder & local reflections)
In addition to the 'primary' 3D sound cues (IAD, ITD and pinna effects), there are several
additional cues which do contribute to the localization capability; these will be referred to
here as 'secondary' cues, and include shoulder/torso reflections, local room reflections, and
psychological cues.
1. Shoulder / Torso reflections
The presence of a torso attached to an artificial head has the effect of increasing the
pressure in the vicinity of the ear up to frequencies of around 2 kHz.
The effect is greater
for frontal sources than lateral ones.
In experience, the presence of the torso does not
appear to contribute much to spatial accuracy.
However, shoulders are located very close
to the ears, and their effect is greater, this time, in respect of
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 |
|---|---|
| CMI8768 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCI 8CH Integrated Sound Chip |
| CMI8768+ | 制造商:CMEDIA 制造商全稱:CMEDIA 功能描述:PCI 8CH Integrated Sound Chip |
| CMI8787 | 制造商:CMEDIA 制造商全稱:CMEDIA 功能描述:High Performance PCI Audio Processor |
| CMI8788 | 制造商:CMEDIA 制造商全稱:CMEDIA 功能描述:High Performance PCI Audio Processor |
| 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(dòng)器電路:指示燈，內(nèi)部驅(qū)動(dòng) 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(shí)間:- 聲壓級(jí):78dB @ 3V，10cm 電流 - 電源:15mA 端口位置:頂部 工作溫度:-20°C ~ 60°C 認(rèn)可:- 等級(jí):- 安裝類型:* 端接:* 大小/尺寸:* 高度 - 安裝（最大值）:* 標(biāo)準(zhǔn)包裝:50 |
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