Convergent Design
14 January 2020
6
Erika User Manual
Every firmware update will come in two versions: one for Speech Mode and one for Music Mode.
Speech mode is the default. Note that with Speech mode, the battery life is longer, and the Erika range is
longer. Speech mode handles audio frequencies up to 11 KHz, which is more than adequate for Speech. In
Speech Mode, up to 4 sets of Erika’s may be used together. Thus, you can have up to four Erika Mics and four
Erika receivers going into a USB 2.0 Hub, then into your computer. Using a USB 2.0 Hub as opposed to a USB
3.0 Hub is essential.
Music Mode handles audio frequencies up to 22 KHz. The battery life will be shorter, and the maximum range,
with Level 5 (maximum power level), will be about 70 feet. Music Mode is also limited to two Erika Mics and
two Erika Receivers in use in one area.
Music Mode is great for Music, but since there are the tradeoffs listed above, we ship the Erika in Speech
Mode. Note that it takes less than a minute to load the Music Firmware version into an Erika Mic and Erika
Receiver (after downloading the Music Firmware update.) You may then reload the Speech Mode whenever
you desire.
Using a different firmware version for Speech and Music, we eliminate the possibility of activating Music
Mode accidentally.
Using Erika with Various Programs
With Windows 10, most programs, such as Zoom, Google Meet, and Microsoft Teams, will immediately
recognize and use Erika as your audio source.
Specific advanced audio programs require you to select the Erika Mic as your audio source manually.
One example is Audacity.
You may change your audio source in Windows 10 by typing “Sound Settings” in “Type Here to Search.”
Scroll Down to “Input,” and then use the drop-down box: “Choose Your Input Device.”
In Mac’s, you may have to select Erika as your audio source manually.
Using Multiple Erikas
Multiple Erikas may be used in the same area or with the same computer system.
1.
In Speech Mode, you may use up to four sets of Erikas (4 Erika Mics with 4 Erika Receivers).
You will need a USB 2.0 Hub (do not use a USB 3.0 Hub).
You will need longer USB-C to USB-A cables or a USB 2.0 Male to Female Extension Cable for each
Receiver. Each Receiver must be at least 1 foot, 1/3 meter, from each other.
2.
You may use various programs, including OBS Studio that supports multiple microphones.
3.
Many programs, such as Zoom, Google Meet, and Microsoft Teams, will only support one audio
source. You may use a program, such as VB-Audio’s VoiceMeeter, Banana, or Potato, to combine
