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喇叭花唱片The Sheffield-A2TB Test Disc《My Disc》极品试音碟下载
在美国Sheffieldlab公司出品的《我的光碟》(My Disc》，the Sheffield／A2TB Test Disc)的封面上，制作人写着：“一张评估音响器材、听音环境及听音能力的测试碟”。的确，这是一张音响发烧友不可缺少的用于进行全面音响测试的工具碟。这张光碟包括音乐测试和技术测试。音乐测试部分选择了几种音乐式样，这样几乎每个人都可找到一种音乐形式来适合个人的口味。技术测试部分录制了各种测试方法及测试信号，这样会排除很多变量对音响系统全面表现所带来的影响。
它不仅用于挑选音源，还用于整个音响系统的甄别、摆位调校以及煲机、练耳，用本碟的第33段—第42段，会把音源的极限状态考出来。
第33-41段为相同的爵士乐片段，第33段为标准电平0dB，以后每段减弱lOdB直到-90dB，第42段为完全寂静，在第33-37段之间还容易听得清晰每个乐音，随着声音越来越小，你可以逐渐开完功放的音量，把耳朵贴在喇叭上……。
这时音源的噪音也开始显现出来，器材的解析水平也将水落石出，最后乐器声越来越难显现出来，许多乐音将在噪声之中挣扎直到最后完全淹没在噪声中。有许多器材在后几段中将出现声音发破，或者有汽船声、电流声，或者是光头读碟时伺服电路工作发出的怪声，不一而足。我曾听到过有每秒响一次规则的“嘟呼”声(结果是显示屏电路秒闪干扰)，越好的器材越能听到高的段位，并且噪音越低越好，许多号称用 PCMl704作DA转换的CD机都过不了这关。
喇叭花唱片The Sheffield-A2TB Test Disc《My Disc》极品试音碟下载
曲目：
Stranger In My Bed - The Power Of Seven
Dish Rag - Thelma Houston/Pressure Cooker
Dance Of The Knights (From Prokofiev's Romeo & Juliet) - Los Angeles Philharmonic/Erich Leinsdorf
Dirty Blue - Adam Makowicz
Wishing Well - Michael Ruff
Dock Of The Bay - Lincoln Mayorga & Distinguished Colleagues
A 1 KHz Sine Wave At -20 DBFS
A 1 KHz Sine Wave At 0 DBFS
A Quick Check For Acoustic Response: 20 Hz
A Quick Check For Acoustic Response: 62 Hz
A Quick Check For Acoustic Response: 125 Hz
A Quick Check For Acoustic Response: 250 Hz
A Quick Check For Acoustic Response: 500 Hz
A Quick Check For Acoustic Response: 2.5 KHz
A Quick Check For Acoustic Response: 5 KHZ
A Quick Check For Acoustic Response: 10 KHZ
A Quick Check For Acoustic Response: 15 KHz
A Quick Check For Acoustic Response: 19 KHz
A Person Counting From 1 To 25
An Identification Track For Right Channel
An Identification Track For Left Channel
A Quick Check For Relative Polarity Between Left And Right Channels
Polarity Pulses
A 1 KHz Sine Wave (With The Bottom Half Clipped)
Three People Describing Their Location Within The Sound Stage
Three People Describing Their Location Within The Sound Stage (People Are Talking Simultaneously)
Music For Evaluating Accuracy & Focus Of The Lateral Sound Stage: In Normal 2-Channel Stereo
Music For Evaluating Accuracy & Focus Of The Lateral Sound Stage: Mono (L + R)
Music For Evaluating Accuracy & Focus Of The Lateral Sound Stage: Fed To Left Channel Only
Music For Evaluating Accuracy & Focus Of The Lateral Sound Stage: Center For Comparison
Music For Evaluating Accuracy & Focus Of The Lateral Sound Stage: Fed To Right Channel Only
Music For Evaluating Accuracy & Focus Of The Lateral Sound Stage: Stereo Signal
Music Recorded At Normal Transfer Level
Music Recorded With Transfer Level -10 dB
Music Recorded With Transfer Level -20 dB
Music Recorded With Transfer Level -30 dB
Music Recorded With Transfer Level -40 dB
Music Recorded With Transfer Level -50 dB
Music Recorded With Transfer Level -60 dB
Music Recorded With Transfer Level -70 dB
Digital Black Or 0 Bits
A High Frequency, Low Level Signal That Alternates Between 0000 And FFFF
Correlated Pink Noise 20 Hz to 20 kHz
Uncorrelated Pink Noise 20 Hz to 20 kHz
Demonstrating The Concept Of dBs
Demonstrating The Concept Of dBs (Four Steps In 3 dB Increments)
Filtered Pink Noise, 1/3 Octave Bands: 25 Hz-31.5 Hz-40 Hz
Filtered Pink Noise, 1/3 Octave Bands: 50 Hz-63 Hz-80 Hz
Filtered Pink Noise, 1/3 Octave Bands: 100 Hz-125 Hz-160 Hz
Filtered Pink Noise, 1/3 Octave Bands: 200 Hz-250 Hz-315 Hz
Filtered Pink Noise, 1/3 Octave Bands: 400 Hz-500 Hz- 630 Hz
Filtered Pink Noise, 1/3 Octave Bands: 800 Hz-1 kHz-1.2 kHz
Filtered Pink Noise, 1/3 Octave Bands: 1.6 kHz-2 kHz-2.5 kHz
Filtered Pink Noise, 1/3 Octave Bands: 3.15 kHz-4 kHz-5 kHz
Filtered Pink Noise, 1/3 Octave Bands: 6.3 kHz-8 kHz-10 kHz
Filtered Pink Noise, 1/3 Octave Bands: 12.5 kHz-16 kHz -20 kHz
A 20 Hz To 20 kHz, Continuous Warble
A Warble From 100 Hz To 20 Hz
Individual Frequencies From 10 Hz To 99 Hz
A Very Flat, Low Distortion 20-20 kHz Sweep For Testing Frequency Response Of Electronic Components
A Very Flat, Low Distortion 20-20 kHz Sweep For Testing Frequency Response Of Electronic Components
A Very Flat, Low Distortion 20-20 kHz Sweep For Testing Frequency Response Of Electronic Components
A (440 Hz)
100 Hz Tone Burst
1 kHz Tone Burst
10 kHz Tone Burst
100 Hz Square Wave
1 kHz Square Wave
Musical Reference Track - Full Dynamics
Musical Reference Track - With Compression
Tests The Radiated Distortion Characteristics Of Your System
Tests The Radiated Distortion Characteristics Of Your System, With .1% Distortion
Tests The Radiated Distortion Characteristics Of Your System, With .3% Distortion
Tests The Radiated Distortion Characteristics Of Your System, With 1% Distortion
Tests The Radiated Distortion Characteristics Of Your System, With 3% Distortion
Tests The Radiated Distortion Characteristics Of Your System, With 10% Distortion
Tests The Radiated Distortion Characteristics Of Your System (Signal Is Music)
Tests The Radiated Distortion Characteristics Of Your System (Signal Is Music), With .1% Distortion
Tests The Radiated Distortion Characteristics Of Your System (Signal Is Music), With .3% Distortion
Tests The Radiated Distortion Characteristics Of Your System (Signal Is Music), With 1% Distortion
Tests The Radiated Distortion Characteristics Of Your System (Signal Is Music), With 3% Distortion
Tests The Radiated Distortion Characteristics Of Your System (Signal Is Music), With 10% Distortion
Music With No Added Deay (A Reference For The Following Track)
Music Demonstration Of Group Delay
You Are Standing Between Roger Penske's Pits And The Main Straightaway
You Experience A Short Walk Down Pit Row
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发表于 2022-9-1 10:06:48
发表于 2023-11-3 16:52:00
