APx511

APx511 Hearing Instrument Audio Analyzer

Ideal for production test and entry-level R&D applications

The APx511 audio analyzer is designed specifically for the needs of hearing instrument manufacturers, providing the specific measurements and I/O required for hearing instrument production test, delivered with Audio Precision’s reputation for high performance and reliability.

APx511 supports a .NET library of functions that automate the tests described in IEC60118- 7 and ANSI S3.22. For the production environment, these functions can be called from any .NET capable language or LabVIEW to control the APx511’s output and measurement settings.

APx511 Statement of Use
The Audio Precision APx511 is not intended to be used as a Medical Device. It is not intended to be used for diagnostic or therapeutic purposes and is not intended to be used in or on the human body. It is not intended to be used by audiologists or for any patient specific use. Intended Use: The APx511 is intended to be used as the signal source and signal analysis portion of a test system which measures the electrical and acoustical response of a hearing aid device (while the device is enclosed in a test chamber during the production process).

The Audio Precision APx511 is intended to be used solely by hearing aid manufacturers for the purposes of (1) conducting product research and development, (2) verifying product performance during production for quality control purposes, and (3) verifying performance for hearing aids returned for evaluation or service.

APx511 button-configure

 

 

 

Automated Routines for IEC60118-7 and ANSI S3.22
APx511 supports a .NET library of functions that automate the tests described in IEC60118- 7 and ANSI S3.22. For the production environment, these functions can be called from any .NET capable language or LabVIEW to control the APx511’s output and measurement settings.

For troubleshooting or test setup, the APx511 can be controlled by the standard APx500 software providing a rich graphical user interface and access to automated reporting, real-time signal monitors, high resolution FFTs and controls for limits & other settings.

In addition to standard audio tests such as level, distortion, frequency response, and attack & release, APx511 can measure battery current using its built-in battery simulator circuit.

Built-in Support for Test Chamber Speaker, Telecoil & Microphone
The APx511 generator includes an in-line 2 watt loudspeaker amplifier (8 ohms) and a telecoil amplifier, allowing >110 dB SPL and up to 400 mA/m field strength from 100 Hz to 10 kHz in a test chamber such as the Interacoustics TBS25. On the input side, APx511 supplies 24 V DC of constant current through a single BNC for a pre-polarized measurement microphone.

Code-Free Automation & Complete API
APx500 Measurement Software is the most advanced audio measurement interface available. Complex procedures that include user prompts, limits, and calls to external applications can be created directly in the GUI, saving time and money while ensuring painless updates over time, as no development is required.

Create custom interfaces and application-to-application automation using the comprehensive APx API for integration in VB.NET, C#.NET, MATLAB, and LabVIEW development environments. Projects and automation can be shared with other APx units anywhere in the world.

Common Software Platform
From a practical perspective, all APx audio analyzers use the same software, making tests and results easier to share. All settings for a test are saved in a single project file, making it easy to replicate test setups between R&D and production facilities anywhere in the world. Project files are compatible with all APx instruments and each project is self-contained, so there’s never any worry about dependencies or broken links. Users can even embed waveform files and images within a project file.

For customers, contract manufacturers or management, APx automatically generates rich graphic reports, with highlighted pass / fail limits and options to export as PDF, HTML, Excel, CSV, RTF or MATLAB files.

I/O OPTIONS

Accessories
The APx HA-1 2cc coupler (for In-the-Ear models) and HA-2 2cc coupler (for Behind-the-Ear models) meet IEC126 and are available for use with any ½-inch or 14 mm measurement microphone.

SOFTWARE OPTIONS

APx500 software options provide measurements and functionality beyond the core set of capabilities.

Software options are enabled by one or more “iButtons” that mount on the rear of the APx511. Each iButton enables a particular feature or set of features, and can be moved from analyzer to analyzer as needed.

POLQA Perceptual Audio Test (SW-POLQA-2)
Perceptual audio measurement returns a subjective assessment of speech quality using the next-generation POLQA algorithm for wide-band speech devices or devices with acoustic coupling. (Successor to PESQ with support for HD Voice, 3G, 4G/LTE and VoIP technologies)

PESQ Perceptual Audio Test (SW-PESQ)
Widely-used, enhanced perceptual measurement for subjective assessment of speech quality on low-bandwidth devices. (PESQ algorithm)

Speech Transmission Index (SW-STI)
SW-STI is a plug-in for conducting Speech Transmission Index (STI) measurements using the STIPA method.

LOUDSPEAKER OUTPUT
Maximum output
2 W RMS into 8 Ω (100 Hz 10 kHz BW)

THD+N
-80 dB @ 2 W / 8 Ω (100 Hz 10 kHz BW)

Frequency Response
±0.1 dB (100 Hz 10 kHz)

Amplitude Accuracy
±0.03 dB (+15° C to +30° C)

Frequency Accuracy
2 ppm
TELECOIL OUTPUT
Maximum output
100 mA RMS up to 20 Ω (100 Hz 10 kHz BW)
(400 mA/m field strength in Interacoustics TBS25)

Total Harmonic Distortion
-80 dB @ 100 mA into 1 Ω (100 Hz 10 kHz BW)

Frequency Response
±0.1 dB (100 Hz 10 kHz)

Frequency Accuracy
2 ppm

BATTERY SIMULATOR
Maximum Current
30 mA

DC Output
Range: 0 to 2 V; Resolution: 0.5 mV;
Accuracy: ± (1% + 10 mV)

Output Impedance
4.3 Ω

Current Measurement
Range: 0 to 30 mA; Resolution: 10 µA;
Accuracy: ± 5%

MICROPHONE INPUT
Connector type
BNC (includes constant current power for a standard pre-polarized measurement microphone. CCP can be also disabled for use with an external microphone power supply)

Power
24 V DC constant current

Maximum Input
8.5 Vrms (equivalent to 151 dBSPL at mic sensitivity of 12.5 mV/PA)

Residual Noise (20 kHz BW)
< 1.3 uV (equivalent to 20 dBSPL at mic sensitivity of 12.5 mV/PA)

Frequency Response
±0.03 dB (100 Hz 20 kHz)

SYSTEM REQUIREMENTS
• PC with 2 GHz or faster multi-core processor (2 or more cores)
Note: the Intel Atom dual-core processor does not have sufficient performance to run APx software.

• 2 GB or more RAM (4 GB or more recommended for Windows 7/8).

• Microsoft Windows XP (32-bit, SP 2 or later), Windows Vista (32-bit), Windows 7 (32- or 64-bit), Windows 8 (32- or 64-bit).

• More detailed information is available on our AP Software and Windows Compatibility chart

• Download System Requirements Document

NOTES
• System performance is sensitive to processor speed; faster processors will yield faster results.

• APx500 is data intensive and it is recommended that other data-intensive applications not be run concurrently. This includes Audio Precision AP2700, APWIN or ATS.

• We recommend and support the following specific editions of Microsoft Windows: XP Professional SP2 and SP3, Vista Business and Ultimate, Windows 7 Professional and Ultimate (32- and 64- bit), Windows 8 Pro and Enterprise (32- and 64-bit).

FEATURES

Automated Routines for IEC60118-7 and ANSI S3.22
APx511 supports a .NET library of functions that automate the tests described in IEC60118- 7 and ANSI S3.22. For the production environment, these functions can be called from any .NET capable language or LabVIEW to control the APx511’s output and measurement settings.

For troubleshooting or test setup, the APx511 can be controlled by the standard APx500 software providing a rich graphical user interface and access to automated reporting, real-time signal monitors, high resolution FFTs and controls for limits & other settings.

In addition to standard audio tests such as level, distortion, frequency response, and attack & release, APx511 can measure battery current using its built-in battery simulator circuit.

Built-in Support for Test Chamber Speaker, Telecoil & Microphone
The APx511 generator includes an in-line 2 watt loudspeaker amplifier (8 ohms) and a telecoil amplifier, allowing >110 dB SPL and up to 400 mA/m field strength from 100 Hz to 10 kHz in a test chamber such as the Interacoustics TBS25. On the input side, APx511 supplies 24 V DC of constant current through a single BNC for a pre-polarized measurement microphone.

Code-Free Automation & Complete API
APx500 Measurement Software is the most advanced audio measurement interface available. Complex procedures that include user prompts, limits, and calls to external applications can be created directly in the GUI, saving time and money while ensuring painless updates over time, as no development is required.

Create custom interfaces and application-to-application automation using the comprehensive APx API for integration in VB.NET, C#.NET, MATLAB, and LabVIEW development environments. Projects and automation can be shared with other APx units anywhere in the world.

Common Software Platform
From a practical perspective, all APx audio analyzers use the same software, making tests and results easier to share. All settings for a test are saved in a single project file, making it easy to replicate test setups between R&D and production facilities anywhere in the world. Project files are compatible with all APx instruments and each project is self-contained, so there’s never any worry about dependencies or broken links. Users can even embed waveform files and images within a project file.

For customers, contract manufacturers or management, APx automatically generates rich graphic reports, with highlighted pass / fail limits and options to export as PDF, HTML, Excel, CSV, RTF or MATLAB files.

OPTIONS

I/O OPTIONS

Accessories
The APx HA-1 2cc coupler (for In-the-Ear models) and HA-2 2cc coupler (for Behind-the-Ear models) meet IEC126 and are available for use with any ½-inch or 14 mm measurement microphone.

SOFTWARE OPTIONS

APx500 software options provide measurements and functionality beyond the core set of capabilities.

Software options are enabled by one or more “iButtons” that mount on the rear of the APx511. Each iButton enables a particular feature or set of features, and can be moved from analyzer to analyzer as needed.

POLQA Perceptual Audio Test (SW-POLQA-2)
Perceptual audio measurement returns a subjective assessment of speech quality using the next-generation POLQA algorithm for wide-band speech devices or devices with acoustic coupling. (Successor to PESQ with support for HD Voice, 3G, 4G/LTE and VoIP technologies)

PESQ Perceptual Audio Test (SW-PESQ)
Widely-used, enhanced perceptual measurement for subjective assessment of speech quality on low-bandwidth devices. (PESQ algorithm)

Speech Transmission Index (SW-STI)
SW-STI is a plug-in for conducting Speech Transmission Index (STI) measurements using the STIPA method.

SPECIFICATIONS & REQUIREMENTS

LOUDSPEAKER OUTPUT
Maximum output
2 W RMS into 8 Ω (100 Hz 10 kHz BW)

THD+N
-80 dB @ 2 W / 8 Ω (100 Hz 10 kHz BW)

Frequency Response
±0.1 dB (100 Hz 10 kHz)

Amplitude Accuracy
±0.03 dB (+15° C to +30° C)

Frequency Accuracy
2 ppm
TELECOIL OUTPUT
Maximum output
100 mA RMS up to 20 Ω (100 Hz 10 kHz BW)
(400 mA/m field strength in Interacoustics TBS25)

Total Harmonic Distortion
-80 dB @ 100 mA into 1 Ω (100 Hz 10 kHz BW)

Frequency Response
±0.1 dB (100 Hz 10 kHz)

Frequency Accuracy
2 ppm

BATTERY SIMULATOR
Maximum Current
30 mA

DC Output
Range: 0 to 2 V; Resolution: 0.5 mV;
Accuracy: ± (1% + 10 mV)

Output Impedance
4.3 Ω

Current Measurement
Range: 0 to 30 mA; Resolution: 10 µA;
Accuracy: ± 5%

MICROPHONE INPUT
Connector type
BNC (includes constant current power for a standard pre-polarized measurement microphone. CCP can be also disabled for use with an external microphone power supply)

Power
24 V DC constant current

Maximum Input
8.5 Vrms (equivalent to 151 dBSPL at mic sensitivity of 12.5 mV/PA)

Residual Noise (20 kHz BW)
< 1.3 uV (equivalent to 20 dBSPL at mic sensitivity of 12.5 mV/PA)

Frequency Response
±0.03 dB (100 Hz 20 kHz)

SYSTEM REQUIREMENTS
• PC with 2 GHz or faster multi-core processor (2 or more cores)
Note: the Intel Atom dual-core processor does not have sufficient performance to run APx software.

• 2 GB or more RAM (4 GB or more recommended for Windows 7/8).

• Microsoft Windows XP (32-bit, SP 2 or later), Windows Vista (32-bit), Windows 7 (32- or 64-bit), Windows 8 (32- or 64-bit).

• More detailed information is available on our AP Software and Windows Compatibility chart

• Download System Requirements Document

NOTES
• System performance is sensitive to processor speed; faster processors will yield faster results.

• APx500 is data intensive and it is recommended that other data-intensive applications not be run concurrently. This includes Audio Precision AP2700, APWIN or ATS.

• We recommend and support the following specific editions of Microsoft Windows: XP Professional SP2 and SP3, Vista Business and Ultimate, Windows 7 Professional and Ultimate (32- and 64- bit), Windows 8 Pro and Enterprise (32- and 64-bit).

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