Audiotec Fischer AMI TUNING KIT – measurement kit for DSP tuning
The AMI TUNING KIT bundles the AMI (Audio Measurement Interface) with a calibrated Beyerdynamic MM-1 measurement microphone and all the cables and adaptors needed for in-car measurements, supplied in a portable case. It is intended for analysing electrical and acoustic signals when setting up DSP-based systems and works directly with the Audiotec Fischer DSP PC-Tool software.
Inside DSP PC-Tool the kit supports input signal analysis (AISA), real-time frequency response measurement with automatic equalisation (RTA with TuneEQ) and automatic measurement of speaker delays (ATM), which speeds up and standardises the tuning process.
Key Features
- AMI interface: microphone input with adjustable gain and 24 V phantom power, plus a line input switchable between 1 V and 40 V maximum for low- and high-level signals
- Outputs: stereo RCA and optical S/PDIF for feeding test signals into a DSP
- Loopback function: for measurements such as phase response
- MM-1 microphone: calibrated condenser microphone made in Germany, with free-field calibration files for 0° and 90°; tuned for a flat response at 90° for in-car use
- DSP PC-Tool integration: AISA, RTA with automatic TuneEQ and ATM automatic time measurement
- USB powered: no external power supply required; 96 kHz / 32-bit audio
- Tuning tracks included: 16 GB USB 3.0 flash drive with DSP tuning tracks
- Broad OS support: Windows 10/11, macOS, Android and iOS
Compatibility
- DSP PC-Tool 4
- DSP PC-Tool 5
- DSP PC-Tool 6
Technical Specifications
| AMI | |
| Inputs | 1 x Microphone input 1 x Line input |
| Microphone input specification | |
| Frequency response | 12 Hz – 44 kHz (+/-1 dB) |
| Dynamic range | 95 dB (A-weighted) |
| Input sensitivity | 5 – 200 mV |
| Phantom power | Yes (24 Volts) |
| Line input specification | |
| Frequency response | 8 Hz – 44 kHz (+/-1 dB) |
| Dynamic range | 101 dB (A-weighted) |
| Input sensitivity | max. 1 V / max. 40 V |
| Input impedance | 10 kOhms |
| Outputs | 2 x Line output 1 x Optical output (SPDIF) |
| Line output specification | |
| Frequency response | 7 Hz – 44 kHz (+/-1 dB) |
| Dynamic range | 100 dB (A-weighted) |
| Maximum output voltage | 900 mV (RMS) |
| Minimum load | 5 kOhms |
| Loopback function | Yes |
| General specification | |
| Audio sampling rate | 96 kHz / 32 Bit |
| USB power consumption | max. 250 mA |
| Supported operating systems | Windows, macOS, iOS and Android |
| Microphone | |
| Transducer principle | Condenser (back-electret) |
| Operating principle | Pressure receiver |
| Frequency response | 20 – 20,000 Hz (50 – 16,000 Hz ± 1.5 dB), diffuse-field equalized |
| Polar pattern | Omnidirectional |
| Sensitivity (0 dB = 1 V/Pa) | 15 mV/Pa (= -36.5 dBV) ± 1 dB |
| Nominal impedance | 160 Ω |
| Nominal load impedance | ≥ 2.2 kΩ |
| Maximum SPL (Sound Pressure Level) | 122 dBSPL at f = 1 kHz, k = 1%, RL = 2.2 kΩ |
| Signal-to-noise ratio (related to 1 Pa) | > 57 dB |
| A-weighted equivalent noise level | Approx. 26 dB(A) |
| Power supply | 12 – 48 V phantom power |
| Current consumption | Approx. 1.9 mA |
| Output | Electronically balanced |
Scope of Delivery
1 x AMI (Audio Measurement Interface)
1 x Beyerdynamic MM1 Microphone
1 x Microphone holder for tripod
1 x RCA-to-Highlevel adaptor
1 x 16 GB USB 3.0 flash drive with DSP tuning tracks
1 x 3.0 m / 9.85’ USB-C to USB-C cable with USB-A adaptor
1 x 3.5 m / 11.50’ optical toslink cable
1 x 3.5 m / 11.50’ mono RCA cable
1 x 2.0 m / 6.56’ XLR microphone cable
