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音频分析仪A1

A1 是深圳爱普泰科电子有限公司基于低成本方案,特别推出的一款多功能极快速的音频综合测试仪,非常适合生产线测试,同时也满足一般的研发测试; 可以应用于消费类产品,专业音频,汽车电子等音视 频类产品,如手机、耳机、音箱、播放器、功放、家庭影院、电视、机顶盒、汽车多媒体 主机等产品的音视频品质检测。
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    • Commodity name: 音频分析仪A1
    • Commodity ID: A1

    A1 是深圳爱普泰科电子有限公司基于低成本方案,特别推出的一款多功能极快速的音频综合测试仪,非常适合生产线测试,同时也满足一般的研发测试; 可以应用于消费类产品,专业音频,汽车电子等音视 频类产品,如手机、耳机、音箱、播放器、功放、家庭影院、电视、机顶盒、汽车多媒体 主机等产品的音视频品质检测。

    测试软件——ATC

    ● 快速测量,操作简单方便

    ● 一键测试,产生多种图形,产生测试报告

    ● 自动测试序列编辑,生成自动化测试程序

    ● 单一测试工程文件,管理方便

    ● 标准的 USB 接口与 PC 通讯

    ● 基本软件随机免费提供,部分功能软件需额外付费,如连续快速扫描,声学分析,BT接口软件等。

    ● 软件界面:软件主界面采用流行的菜单式结构,界面简单。

     

    1. 主要特性和功能

    1.1 关键特性:

    模拟双通道输入\双通道输出

    执行多功能和高性能的音频测量(其中包括示波器,频谱分析,连续快速扫描等)

    提供自动测试和内置测试序列,简化测试环境

    支持LABIEW, VB.NET,C#.NET

    自动生成各种格式的测试报告

    使用ITUT-T 标准,POLQA 和PESQ 完成更高质量的语音和音频测量

     

    1.2部分测试功能:

    电平/增益 Level&Gain

    频率响应 Frequency Response

    总谐波失真加噪音 THD+N

    信噪比 SNR

    直流电平 DC Level

    直流电平扫描 DC Level Sweep

    通道间相位 Interchannel Phase

    示波器(频谱仪) Scope Monitor/Specturm

    频率测量 Frequency Measurement

    测试记录器 Measurement Recorder

    步进电平扫描 Stepped Level Sweep

    步进频率扫描 Stepped Frequency Sweep

    对比编码码流 Compare Encoded Bitstream

    共模抑制比 CMRR

    信纳 SINAD

    通过/失败判定 Pass/Fail

    噪音 Noise

    分离度 Crosstalk

    准峰值噪音 Q-peak Noise

    电平比率 Level Ratio

    输入采样率 Input Sample Rate

    声学响应测量 Acoustic Response

    扬声器参数测量 Loundspeaker Test

    PESQ声音质量指数评估

    POLQA主观声质评测

    阻抗曲线/TS参数/Impendance/Thiele-Small

     

    2. 硬件描述

    1. 模拟双通道模拟平衡和非平衡输入/输出接口

    2. 支持线性编码数字音频以及光纤接口(AES/EBU, TOSLINK, SPDIF)

    3. 支持Bluetooth蓝牙音频码率

    4. 最高支持192K数字采样率

    5. 支持自动化测试

  • 性能指标

    1. 系统性能

    残余THD+N(20kHz BW):-102dB

     

    2. 模拟信号源指标

    通道数:双通道

    接口类型:平衡XLR口 ,非平衡BNC口

    信号类型:正弦波,IMD信号,连续扫描信号, 多音信号, 噪声信号

    支持数字波形文件格式:(wav,ac3,ec3, etc.)

    频率范围:2Hz~80.1KHz

    频率精度:3pmm

    IMD测试信号类型:SMPTE,MOD,DFD

    正弦波最大输出电压16V(平衡)/8V(非平衡)

    幅度精度:±0.05dB

    平坦度(20Hz-20kHz):±0.01dB

    模拟输出配置:非平衡和平衡,共模

    具有过载保护功能

     

    3. 模拟分析仪指标

    通道数:双通道

    接口类型:平衡XLR口 ,非平衡BNC口

    输入阻抗 100 kΩ || ≈ 200pF

    共模抑制比CMRR ≥80 dB, 5 Hz to 5 kHz

    串音:平衡方式 >90 dB to 20 kHz;非平衡方式 >100 dB to 20 kHz

    最大额定输入电压:230Vpk

    最大带宽:>90kHz

    IMD测试功能:SMPTE,MOD,DFD

    幅度精度(1kHz):±0.05dB

    幅度平坦度(20Hz-20kHz):±0.01dB

    残余输入噪声(20kHz BW):1.4uV

    独立谐波分析仪:d2-d10

    最大FFT长度:1024K点

    DC电压测量

     

    4. 数字信号源/分析仪接口

    ●数字接口类型

    ●数字音频格式

     

    5. 通用指标

    尺寸(宽X深X高):430*305*88.9mm

    重量:5kg

    电源:100-240V/90W、50-60Hz

  • 音频分析仪A1

    1. AX-SPK-RD/PT选件

    SPK-RD 选件, 为电声/音频产品的设计开发工程师量身订做,提供全面的声学测量功能. 其中包括关键的声学指标, 扬声器阻抗分析, Thiele-Small 特性等参数,能量时间窗口控制环境响应反射。支持瀑布图和极化图。SPK-PT 选件, 为电声产品的产线测量提供快速精确的测量方案. 1s 的信号扫描, 分析仪将采集到的扬声器参数与黄金单元(Golden Unit)进行对比,确保待测品与黄金单元的高度一致性。同时测量声压级,频响,Rub&Buzz,极性,THD等。

     
    音频分析仪A1

    2.AX-PESQ&POLQA选件

    感知音频测量可衡量人们如何感知声音品质,广泛引用于智能手机,VOIP网路和设备测试。感知声音品质测试适用于频宽或位元速率有限的设备,使用标准的正弦波测试频响、失真等参数不能有效的比较不同设备的性能。只有结合感知音频测试和电气音频测试,才可以完全说明这些设备的性能。

     
    音频分析仪A1

    3. 声学选件AX-ACO

    AX-ACO包含ASIO(常见的如USB耳机或者声卡)数字音频流输入输出功能,高速多音测量和连续扫描测量,声学响应测量功能,IMD.MOL.动态范围.FFT以及其他高级测量。

     
     
    4. AX-STEREO/立体声信号发生器
     
     
    5. AX-LDR/响度测试选件
     
     
    6. AX-STIPA/语言清晰度测试模块
     
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