ListenTech-Note
Doc. # LTN0061
Page 7 of 9
Revision: 08-23-22BC
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Set a static channel on the wireless access point(s). Many WAPs can automatically
change channels to try and find one with the least interference. This feature can cause
audio dropouts each time the channel changes, as often as every 20 seconds. If it does
not settle on a channel after 30-60 minutes, it may be best to choose a channel
manually.
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Check your Bluetooth device (if applicable). Bluetooth speakers and headphones can
potentially cause an additional 200-700ms in latency. The amount of latency can vary
between Bluetooth devices. Utilizing devices with Bluetooth 5.0 or higher and Bluetooth
Low Energy (BLE) can help reduce latency. If using a hearing aid or cochlear implant
with Bluetooth technology, try toggling between listening modes to reduce latency.
Bluetooth devices are also susceptible to interference from Wi-Fi signals. Try moving
closer to the wireless access point.
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Be mindful of cable runs. Cable runs from the audio source to the Listen EVERYWHERE
server should be balanced to avoid introducing interference or noise. If an unbalanced
cable is used, you can reduce noise by improving cable shielding, avoiding long cable
runs (usually over 15ft), and by avoiding objects that can be picked up by the ground
wire.
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Avoid ground loops. A ground loop is characterized by the introduction of a humming
noise in the audio and can occur when multiple devices are interconnected through a
shared ground reference. Grounding is needed for both power and audio connections,
so it’s important to not allow these ground references to create a loop within the device
setup. When it comes to Listen EVERYWHERE, it may occur when the source audio,
other audio devices, and LE server are connected to the same ground reference,
usually in the form of a shared power strip or electrical outlets with interconnected
ground references.
In order to combat a ground loop occurrence, the equipment’s
circuitry will need to be separated or a ground loop isolator can be installed.
No Audio or Partial Audio:
If you are reviewing this section, you are able to successfully connect to the Listen
EVERYWHERE server through the Listen EVERYWHERE app. However, no audio or partial audio
is heard on the channel after channel selection within the app. The LE server contains green
LEDs on the front of the unit that will illuminate when audio is present and at an adequate
level. This may help determine if the issue is audio-based or network-based and can be
troubleshot accordingly.
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Correctly connect audio to the Listen EVERYWHERE server. If the server is set up for
mono, connect to a single terminal block input, or connect to one vertical pair of red
and white RCA connections (LW-100P only). If the server is set up for stereo, connect to
a pair of terminal block inputs, or connect to one RCA input on the left and one RCA
