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Microphone Settings and Schedules
Each microphone connected to a SMART Controller can have its own Setting Profile and Schedule Profile. These profiles determine when the microphone is active; the settings it uses to detect, record, and analyze bat echolocations; and set the scheduling of microphone sensitivity testing and moisture clearing.
SMART MIC-1 Settings
Each SMART MIC-1 microphone connected to a SMART System can have independent settings. These settings govern everything from basic audio parameters to parameters defining how the SMART System detects bat pulses in each microphone's recorded audio.
Audio Settings
The Audio Settings set basic parameters for incoming audio, such as recording format, sample rate, and gain.
Sample Rate
The sample rate of a digital audio system sets the upper frequency limit on the recorded audio. The sample rate also directly affects the file size for a recording of a given length. The available sample rates depend on how many microphones are connected to a single SMART Controller.

Terms of Use
Document History
This documentation receives frequent updates, which are described here.
Introduction
Song Meter® with Analysis and Remote Transfer, or SMART™, is a multi-channel, ultrasonic audio recording and analysis platform from Wildlife Acoustics®.
Getting Started
The first time you use a SMART System, we recommend setting it up in an accessible location, such as an office. This will make it easier to configure the SMART and perform any necessary troubleshooting.
Microphone Settings and Schedules
Each microphone connected to a SMART Controller can have its own Setting Profile and Schedule Profile. These profiles determine when the microphone is active; the settings it uses to detect, record, and analyze bat echolocations; and set the scheduling of microphone sensitivity testing and moisture clearing.
- Select a Microphone Setting Profile and Schedule Profile
  Each microphone attached to a single SMART Controller can have a unique Setting Profile and Schedule Profile selected from the ones included by default or that you create yourself.
- Creating and Editing Settings Profiles
  The Setting Profiles tab is where you can create and edit profiles to apply to each of the SMART System's microphones.
- SMART MIC-1 Settings
  Each SMART MIC-1 microphone connected to a SMART System can have independent settings. These settings govern everything from basic audio parameters to parameters defining how the SMART System detects bat pulses in each microphone's recorded audio.
  - Audio Settings
    The Audio Settings set basic parameters for incoming audio, such as recording format, sample rate, and gain.
    - Sample Rate
      The sample rate of a digital audio system sets the upper frequency limit on the recorded audio. The sample rate also directly affects the file size for a recording of a given length. The available sample rates depend on how many microphones are connected to a single SMART Controller.
    - High-Pass Filter
      The high-pass filter attenuates incoming audio signals lower in frequency than the specified cutoff frequency. This can reduce the effects of wind noise and other low-frequency sounds on the quality of your recordings.
    - Gain
      Gain is amplification that can be added to the microphone signal before it is digitized. It should be adjusted to either increase the level of quiet signals or to prevent loud signals from distorting.
    - Maximum Duration
      The Maximum Duration setting sets the maximum length for any audio file recorded from a given SMART microphone. This setting has similarities to the Maximum Sequence Duration, but Maximum Duration should generally be used only during non-triggered recording.
    - Triggered Recording with Bat Call Analysis
      In the default recording mode, with Triggered Recording with Bat Call Analysis enabled, the SMART System records only in response to bat calls detected by its microphones, and it analyzes the recording contents to measure common bat call parameters. This setting can be disabled to record continuous audio without bat call analysis.
    - Recording Output Settings
      For each Microphone Setting Profile, you can set whether to save processed audio as full-spectrum recordings, zero-crossing recordings, both, or neither.
  - Heater Settings
    The SMART MIC-1 has a built-in heating element for removing condensation, which can reduce the sensitivity of its microphone elements.
  - Calibration Settings
    The SMART MIC-1 can use its built-in ultrasonic speaker to test the sensitivity of its microphone elements at regular intervals during its recording schedule.
  - Settings for Triggered Recording
    Many settings available on the Setting Profiles tab only apply when Triggered Recording with Bat Call Analysis is enabled. These settings affect what kinds of signals will trigger recording and how the SMART will segment and process the resulting audio.
- SMART MIC-1 Schedules
  Each microphone attached to a SMART System can run an independent schedule, which determines when the microphone will monitor for bat activity each day.
- Change Microphone Name (Prefix)
  Each microphone attached to a SMART Controller can be given a unique name, or prefix. This prefix is used as part of the file name of any recording, results table, or log file associated with the microphone.
SMART Controller Configuration
Before you deploy the SMART System, you should configure basic system and network settings. These include login credentials, date, location, and network configuration settings.
Data Management
The SMART System stores recordings and logs on its internal drive initially, and it can periodically transfer new data to a USB or networked storage drive.
Installing SMART
Installing the SMART System on a wind turbine, meteorological tower, or similar structure requires careful planning. Proper connectivity, grounding, and microphone placement will help ensure a successful deployment.
Bat Activity Alarms and Control System Integration
The SMART System can integrate with a windfarm SCADA network or similar control system to perform acoustically triggered curtailment (ATC). You can define custom alarms that detect bat activity based on custom-defined parameters. When these alarms trigger, you can send control signals to other devices on a control system to trigger turbine shutdowns.
Troubleshooting
Specifications
SMART Enclosure
The SMART Enclosure is a preconfigured, weatherproof enclosure that can be purchased with the SMART System.
SMART API and Command Reference
The SMART System software includes utilities, command-line scripts, and APIs that can be used for additional customized programming of the SMART System.
Glossary
Warranty
Except as specifically provided herein, Wildlife Acoustics makes no warranty of any kind, express or implied, with respect to this product.
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Prohibition Against Eavesdropping
Patents
Copyright Notices
Contact Information

Sample Rate

The sample rate of a digital audio system sets the upper frequency limit on the recorded audio. The sample rate also directly affects the file size for a recording of a given length. The available sample rates depend on how many microphones are connected to a single SMART Controller.

Options: 256 kHz; 384 kHz; 500 kHz
Default: 256 kHz

Audio up to half of the sample rate will be recorded in the resulting file. For example, a sample rate of 256 kHz means you can record audio up to 128 kHz. For bat monitoring, your sample rate should be at least two times the highest frequency produced by your species of interest. Choosing the lowest sample rate that meets this criterion will minimize your data storage use.

Native zero-crossing (ZC) recorders do not use a sample rate. However, the SMART produces ZC files by converting audio that is first recorded in full-spectrum. Therefore, the sample rate will determine the highest frequency that can be recorded for both full-spectrum and zero-crossing files.

Limitations on Sample Rate

The SMART Controller has been tested to determine recommended limits on sample rate and number of microphones. Exceeding these recommendations can result in dropped samples or audio discontinuities. The SMART Controller can be purchased with an upgraded CPU, which expands the number of microphones that can be used simultaneously with a given sample rate.

Table 1. Maximum Sample Rate by Number of Microphones
Number of Microphones	Recommended Maximum Sample Rate
Number of Microphones	Base-Model SMART Controller (2-Core CPU)	Upgraded SMART Controller (4-Core CPU)
1	500 kHz	500 kHz
2	384 kHz	500 kHz
3	256 kHz	500 kHz
4	Not supported	500 kHz