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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.
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.

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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Contact Information

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.

Options: 8 kHz; 16 kHz
Default: 16 kHz

For every factor of two below the cutoff frequency, the audio at that frequency is reduced in amplitude by 12 dB.

Example

If the high-pass filter is set to a cutoff frequency of 16 kHz, sound at 8 kHz will be attenuated by 12 dB, and sound at 4 kHz will be attenuated by 24 dB.

Recommended High-Pass Filter Setting for Bat Monitoring

If none of your bat vocalizations of interest extend below 16 kHz, set the High-Pass Filter to 16 kHz for the best noise-reduction effects. If you need to record frequencies between 8 and 16 kHz, set the High-Pass Filter to 8 kHz.