Active Voice Amplifier
Nicodemo Aidara
Providing a forum for new ideas, as a vehicle for the dissemination, application and implementation of leading-edge research, as archivists of the sum total of audio knowledge, the AES is the global authority in the audio sciences.
Since a cathode-ray tube television was introduced first to the consumers in the late 1920s, a variety of multimedia device form-factors has appeared in the consumer market until now. Although the values of multimedia devices had been mostly put on picture quality and sound quality in the past, it is undoubtedly told at this moment that user experience is the most important and attractive value for the multimedia products. As for now, almost all outstanding features of the brand-new products are the technologies about user convenience such as voice user interaction, device unlock, contents recommendation, and so on. Likewise, an unprecedented feature of smart TVs, the Active Voice Amplifier, was introduced in the Consumer Electronics Show 2020, and it detects disturbing noise and enhances voice clarity accordingly and automatically. To design this feature and make it work in real time on real devices, state-ofthe- art signal processing methods and deep learning technologies are integrated in a function for the novel approach of noisy environment detection and speech extraction from multimedia audio contents. This paper overviews what this function pursues in user experience, describes how it was designed in terms of signal processing methods, and demonstrates how effectively it works on real-time TV systems.
Cho, Jaeyoun; Kim, Sunmin; Hwang, Inwoo; Active Voice Amplifier: On-Device Noisy Environment-Aware Solution for Dialogue Enhancement in Real Time [PDF]; Samsung Electronics Co., Ltd., Suwon, South Korea; Paper ; 2023 Available: -page/?id=22036
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The built-in anti-feedback function can automatically eliminate unexpected and annoying howling sounds, provides stable and worry-free performance. Built with professional audio processors to amplify your voice and ensure everyone around you hears you loud and clear. After all, you can't yell or shout all the time. It also saves your vocal cords unnecessary stress when you have a difficult time speaking loudly enough. Perfect for those with a weak or strained voice or who regularly use their voice intensively.
Now, is the battery durable? Absolutely! This amplifier comes with a rechargeable 2200mAh battery, which offers you 12 hours of non-stop service, so the durability is covered. It's the best choice for a variety of people like teachers, coaches, tour guides, presentations, and meetings with a large number of attendees.
What's also worth mentioning is that the amplifier comes with an adjustable strap for hands-free use. Lightweight and ergonomic design for a portable audio experience. It can hang down from the neck or settle down in your waist without producing any discomfort. It also comes with a back clip to offer more convenience. Perfect for those who need to move around often.
More than just a voice amplifier, it acts as a Bluetooth speaker too, which also supports AUX, USB drive, and Micro SD card inputs. Not many devices will offer you these. Insert the USB flash disk or TF card (support up to 64GB) to play your own music list or pre-recorded audio clips. The Bluetooth and auxiliary audio input allow you to play music and audio from virtually any device like your smartphones and tablets. You will also be impressed that the music playback and voice amplifiers can work simultaneously.
The standard 9.7mm diameter large microphone with high sensitivity, low distortion, and oriented design can effectively reduce the interference of loud surrounding environmental noise while still ensuring clean and clear voice transmission.
Insert the microphone, insert a microSD card or a USB flash disk (recording files will be saved in MP3 format), switch to AUX mode, or Bluetooth mode, then press the record button to record. Recording playback supports single loop and full loop, convenient for shops to cycle playback and promotion language.
If amplifies sound while playing music, press and hold the mode switch button for 3 seconds to switch the Microphone Priority function. Speaking through the microphone will automatically suppress the background sound of music playing. Amplify at any time without interference. Note: Microphone Priority enabled: background music will pause when speaking; Microphone Priority disabled: background music will still play when speaking.
The buttons located on the top are all covered by silicone, comfortable to press, and are strongly made for passing the test of time. It can be easily pressed when used on the waist, with no risk of accidentally touching compared to the touch button.
E180M voice amplifier takes only 4-6 hours to charge and can last more than 20 hours. You can repeat single tune, loop all music and switch songs. The wired mic is active while music is playing as well so you can keep the music playing in the background while speaking if you need.
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