DODOTRONIC ULTRAMIC384KEVO High Performance Dual Sensor Ultrasonic USB Microphone User Guide

DODOTRONIC ULTRAMIC384KEVO High Performance Dual Sensor Ultrasonic USB

Microphone

Overview

Ultramics are USB audio and ultrasonic microphones. Two versions are available:

• UM384K USB MICROPHONE with 384 kHz sampling rate and 190kHz bandwidth
• UM192K USB MICROPHONE with 192 kHz sampling rate and 95kHz bandwidth

This means that you can record sounds up to about 190 kHz or up to 95 kHz.
The USB 2.0 full speed port allows an easy connection to your PC, iOS, Android smartphone or tablet and to embedded Linux systems.

The microphone is provided (optional) with a magnetic cone that makes the microphone more directional.
The cone can be easily removed pulling it from the tip making the microphone omnidirectional, moreover the cone provides a protection to the sensor.
The magnets keep the cone close to the sensor.

Features

• A high performance dual sensor- omnidirectional audio and ultrasonic microphone
• USB 2.0 full speed connection using a driverless – audio class UAC 1.1 interface for an easier com-munication with host devices
• Hardware amplification gain is settled via four level switch

USB Connection

Connect your Ultramic384K to your smartphone with a USB OTG adaptor

Planar Plot

• ULTRAMIC384k_EVO with cone mounted
  

• ULTRAMIC384k_EVO with cone unmounted
  

Frequency Response

Applications

• BIOACOUSTICS:
  • Detecting and recording of biological ultrasounds for bioacoustics studies on insects, cetaceans, rodents, and bats.
  • Environmental studies to assess the impact of wind farms on bats.
  • Recording and analyzing mice ultrasonic vocalizations for pharmacological studies.
  • Soundtracks and special effects (such as slowing down the recorded ultrasounds).
• INDUSTRIAL:
  • LEAK detection
  • Predictive motor fault monitoring
  • Detection of high-frequency noises emitted by switching power supplies, LCD screens, or the turbines of car and truck engines, energy saving lamps.

The use of USB audio class allows the microphone to be used as a standard Plug & Play device with no driver installation required.

WITH YOUR PC

Insert the USB connector of the microphone to the USB connector of your PC.
Less than a minute is required for the operating system of your PC to install the required software. Install your preferred audio software. The list of compatible software can be found on: www.dodotronic.com

WITH YOUR SMARTPHONE OR TABLET

Use a USB OTG adapter and connect the Ultramic to your Android smartphone.
Download the BAT RECORDER app and open it.
Connect your headphones to listen the ultrasound translated in audio range. The online user guide will lead you to understand the many available features.

How to Setup Audacity with Ultramic384K_EVO

Technical Specifications

Recording format|

Linear PCM (Pulse Code Modulation) format

---|---
USB B connector|

USB 2.0 Full Speed USB audio class 1.1

External dimensions|

Ultramic = 80 W x 30 L x 16 H mm Cone = 37 W x 25 L x 18 H mm

Weight|

24 g

Switch gain settings referred to 1 kHz 94 dB SPL = 0 dB| 1
2
3
4| -33 dB
-10dB
0dB
10dB
Sampling frequency|

384 kHz/second or 192kHz/second

Resolution|

16 bit

Amplification|

High quality, and low noise, amplification with low pass filter with cutting frequency of 190 kHz or 95kHz

CPU|

32 bit integrated ARM Cortex M4 microcontroller

Power|

15 mA power requirement when connected to a USB host

Microphone sensor|

Dual MEMS sensor

Test Devices:
SENSOR = BRÜEL & KJÆR 4138
PREAMPLI= BRÜEL & KJÆR 2669
AMPLI= BRÜEL & KJÆR NEXUS 2690; software version Boot: 1.10, application 2.50. WH3219 = BRÜEL & KJÆR frequency extension (140kHz -1dB; 200kHz -3 dB). Calibrator = Temna 72-2680 94dB / 114dB
Sampler ADC: Ultramic384K 384kHz sampling rate 16 bit
Software = Multi-Instrument Pro 3.7

Waveform Generator:
Owon AG2052F Bandwidth 50Mhz 300 MS/s Resolution 14 bit

Ultrasonic Emitter:

• US-4112 Sobreton
• Ribbon loudspeaker

MULTIMETER: Fluke True RMS 289

Q&A

Q: How can I connect Ultraimc384K to my own analog recorder?
A: Ultramic384K doesn’t need a separate recorder and cannot be connected to an analog recorder since the only output is digital (USB). Use the integrated recorder instead.

Q: Can I record audio and Ultrasound at the same time?
A: Yes, Ultramic384K_EVO has no high pass filter so you can record audio and ultrasound at the same time.

Q: I want to listen and view the spectrograms of acoustical signals.
A: Connect your Ultramic384K to your smartphone, tablet or PC and use your preferred app. The list of compatible apps is available on www.dodotronic.com.

Q: My software can’t get the audio stream from UM384K.
A: Not all the software allows high sampling rates used by Ultramic, check if the sampling rate of your software can be set to 384 kHz.
Select the correct sound source.

Q: I’m recording in real time but from the spectrogram I see only a valid bandwidth up to 20 kHz.
A: probably you have selected the wrong sound source, try to change the sound source from the PC microphone to UM384K.

Technical Assistance and Support

Send request to: info@dodotronic.com

Safety Precautions

Before using this device, read this manual carefully to ensure that you know how to operate the Ultramic384K safely and correctly. Be sure to keep this manual on hand so that you can refer to it at any time.

Instructions for Use

• Do not leave the product where it will be subject to high temperatures and/or in direct sunlight.
• Do not use organic solvent such as alcohol or thinner for cleaning.
• Do not apply strong vibration or shock to the product.
• Do not expose to water and dust.
• Use appropriate cables

CAUTION

• Stop using the product if you notice an abnormality such as unusual odor, abnormal sound, or smoke.
• Do not leave the product where it will be subject to high temperatures.

Conformity Declaration
Model: ULTRAMIC384K EVO

Ultramic is in conformity with the protection and compliance requirements of the following EC Directives:

• 2004/108/CE
• 2006/95/CE

Dodotronic di Ivano Pelicella via Giuseppina Saragat, 6 00073 Castel Gandolfo RM Italy
VAT IT07343571001
www.dodotronic.com
info@dodotronic.com

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