No adjustment is needed. The Echo Meter Touch uses an omnidirectional, ultrasonic microphone and it is mounted at 45 degrees in the enclosure, so it is suitably oriented for monitoring whether the device is held in landscape or portrait layout.
Yes, there are third-party Lightning extension cables that work with the Echo Meter hardware and allow extending the Ultrasonic module up to a few meters. Be aware that none of them are Apple-approved, so we cannot sell them. However, our favorite cable extender is made by a company called CableJive.
Yes, however, the Echo Meter Touch Module fits snugly against the iOS device and, as such, it may not fit with all cases. You may need to obtain a Lightning extender adapter to make it work. There are third-party Lightning extenders that work with the Echo Meter hardware, but be aware that none of them are Apple approved, so we cannot sell them. However, our favorite Lightning extender is made by a company called CableJive.
The EMT 1 and EMT 2 Pro can be configured to record sounds above 8 kHz other than bat echolocation pulses, such as mice vocalizations. Because the EMT settings are tuned by default to automatically record bats, a few settings changes are necessary.
In the advanced settings pane, turn "Real-Time Auto ID" off to prevent the app from trying to assign a bat species to your recordings. Turn "Save Noise Files" on so that recordings will be kept regardless of if the app thinks it recorded a bat or not.
When you are in live mode, using the manual record button to create continuous recordings may be more useful than using the automatic, triggered recording mode, which is tuned for bats and may perform ideally with non-bat vocalizations.
The Echo Meter Touch does log the recording location if you have an iOS device that includes GPS functionality. Any iPad that is cellular-enabled (and of course the iPhone) will log both GPS locations and path. If you do not have GPS, you can purchase a Bluetooth GPS module that will stream location data to the iOS device. There are several such devices on the market, including the Dual Electronics XGPS150A and the Garmin GLO. Both are under $100, highly accurate and have their own batteries to avoid depleting the iOS device. If you have built-in or Bluetooth GPS, then all the recordings will be tagged with their location and the path will be recorded from each recording session. The path and locations are also exported with recordings in KML format and can be opened in Google Earth.
The Echo Meter Touch module requires a lightning data connection with an iOS device in order to work, and, unfortunately, many battery cases do not allow for external data connections when they are attached to an iOS device. If you need some extra battery life while using your Echo Meter Touch module, you can use a battery case provided it has lightning data pass-through.
Currently, the only battery case that Apple officially supports is their own iPhone 7 Smart Battery Case.
Aside from increasing your iOS device's battery capacity, there are several ways to reduce the amount of power it uses:
- Before using the Echo Meter app, close all other apps that are running in the background by double-pressing the home button and swiping each app panel upwards.
- Lower the device's screen brightness by pulling up the iOS control center from the bottom of the screen and adjusting the brightness slider.
- Once you start recording, press the sleep/wake button to turn off the iOS device's screen while continuing to record.
- Rather than using the device's built-in GPS receiver, if it has one, use an external GPS module paired via bluetooth.
For most datasets, it is very simple to transfer recordings to a computer over Wi-Fi.
- On your iOS device, open the Settings app. Make sure you are connected to a Wi-Fi network, and ensure that your computer is connected to the same network.
- Open the Echo Meter app and navigate to the Recordings list.
- Tap the Edit button in the upper-right corner.
- Select the recordings you want to transfer by tapping on the dark circles to the left of each entry.
- Press the Share icon, represented as three connected dots, at the top of the screen. This brings up the Share Recordings prompt.
- Tap "WiFi" and wait while the app compresses your recordings into a single archive.
- On your computer, open a web browser and enter the URL exactly as it appears on the screen of your iOS device. This will take you to a web page where you can download your recordings.
This procedure will work with common household, single-router Wi-Fi networks. If you are on a school or corporate network and find that this method does not work, see instructions for using iTunes file transfer below.
iTunes File Transfer
For very large datasets, or when Wi-Fi is not available, the fastest way to get recordings off of your iOS device is to use iTunes on your computer. Please see the video below for a demonstration of this process, or this Apple Support article for a written guide.
The number of recordings are dependent on the available storage on your iOS device. The storage capacities on compatible devices range from 16 GB to 256 GB. The operating system and your other apps take up room, but even at the smallest size, there should be plenty of room for several nights of monitoring. Figuring a few megabytes per recording sampled at 256 kHz and a few hundred recordings a night, that's about half a gigabyte per night.
If you are using the Echo Meter Touch 2 Pro, note that recordings made at a sample rate of 384 kHz take up 50% more space than those recorded at 256 kHz.
Yes, the app has been designed such that you can continue to hear and record bats while the screen is off. This is useful if you find the screen distracting or you want to prolong the battery life if you are running low. Just press the Sleep/Wake button on your iOS device to turn the screen off.
Before digging into the specifics of your issue, it's best to perform a baseline set of updates and checks to rule out any routine issues:
- Ensure that the iOS device you are using is on our list of compatible devices. Many issues can be caused by a lack of computational resources in older devices.
- Update iOS to the latest stable version. See Apple's instructions for updating iOS here.
- Update the Echo Meter app to the latest available version in the Updates tab of the App Store. See a short video demonstrating this process here.
- Close all apps and reset your device before opening Echo Meter again:
- Close all apps running on your device by double-pressing the home button, then swiping each window upwards.
- Shut off your device by holding the sleep/wake button and following the "slide to power off" prompt.
- Turn your device on by holding the home button and the sleep/wake button until an Apple icon appears on the screen.
- Open Echo meter without opening any other apps.
When early versions of iOS 11 were released to beta testers, we discovered that changes to iOS prevented it from communicating with EMT 1 modules with serial numbers greater than 494. This manifested as a rapid series of messages showing that the module was being repeatedly connected and disconnected.
As of iOS version 11.2, these problems with iOS have been corrected, and all versions of the EMT hardware work correctly with the newest version of iOS on compatible devices. If you are seeing issues like the one described above, you are likely running iOS 11.0 or 11.1, and should update your device to the latest available version.
As soon as we confirmed this bug, we notified users via our mailing list. To join the mailing list and receive important notices about any of your equipment, use the sign-up form on our contact page. We also recommend registering your Echo Meter Touch module to be notified about any issues that may affect your model and serial number specifically. In the Echo Meter Touch app, open the Information page and tap "Register Ultrasonic Module."
Android versions of the Echo Meter Touch 2 and Echo Meter Touch 2 Pro modules, as well as the accompanying app, will be available in Fall 2017. The iOS and Android versions of the modules will not be cross-compatible.
We cover many species of North America, Europe, the UK, the Neotropics, and South Africa. The Echo Meter Touch uses the same classifiers as our Kaleidoscope Pro software. You can see the full list of species here. As we add regions to Kaleidoscope, we will also add them to Echo Meter Touch.
This is a very difficult question to answer. The factors that determine how far a sound travels include humidity, temperature, the source volume and directionality, and surrounding clutter. Additionally, no two microphones have exactly the same sensitivity, even brand new.
This white paper discusses all of the factors involved in much greater detail.