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Underwater Voice

  • On November 2, 2021
Underwater voice is a voice that sounds as if the speaking person is under the water or is behind some mask. The voice in this case is not clear and lively but sounds a bit muted and muffled. Why does this happen? Human sound is created when air passes the vocal cords and create sounds. […]
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Background human voices

  • On August 22, 2021
There are many cases in which the background noise in phone calls includes human voices. This might happen, for example, in the office where there are other people talking in the background. An extreme case is a crowded call center environment but human noise is not limited to the office and can also appear in […]
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ASR in a Noisy Environment

  • On November 11, 2019
Automatic Speech Recognition (ASR) is a powerful technology that uses advanced machine learning and artificial intelligence techniques. ASR improves the quality of service while reducing its cost. Modern ASR engines are being trained to recognize different languages and dialects. They can also be trained for an industry-specific vocabulary. Overall, modern ASR engines are very accurate […]
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Echo and noise in Kiosks and Vending Machines

  • On April 23, 2019
Kiosks and vending machines are perhaps the most widely used devices that can be found almost in any public area. Their main purpose is to provide a wide spread service in almost any public location. These devices are very common and their number is not very different from the size of the human population. For […]
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Noise reduction algorithms – PNR vs. RNR

  • On July 16, 2018
Background Recently SoliCall introduced the reference-based noise reduction (RNR). This new technology was added to our noise reduction portfolio which already contained profile-based noise reduction (PNR) and standard noise reduction.  Following the RNR introduction, we got requests to elaborate on the difference between PNR and RNR as they both use a profile/learning mechanism. In this […]
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Poor Audio Quality with Hosted VoIP and Cloud-Based PBX

  • On December 25, 2016
Background The hosted VoIP service is gaining popularity like other cloud-based infrastructure services. SMBs prefer hosted VoIP solution to cut down costs and operational overhead. In addition many providers offer attractive build-in features on top of the standard service.  As opposed to other IT services, VoIP is more delicate and if not handled correctly it […]
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Registering a Personal Voice Profile

  • On November 19, 2016
Background In the previous post we have discusses a unique technology for tuning the ambient noise reduction to your voice and therefore enable a superb personalized noise cancellation. By this point, the power and need for this technology is clear. The question that one might ask is the “price” that needs to be paid in […]
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Profile-Based Noise Reduction

  • On November 19, 2016
Background In this post we will discuss the current status of SoliCall’s innovative and powerful noise reduction technology.  Initially this technology was introduced under the name of personal noise reduction.  Few months later the concept of out-of-the-box deployment with generic profiles was introduced. Recently, we have renamed this technology to “profile-based noise reduction“.
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Extreme Noisy Environments

  • On November 19, 2016
Background Following our last post on the profile-based noise reduction technology, in this post we would like to cover few environments that suffer from extreme ambient noise. In these environments, many existing technologies are used to minimize the ambient noise. Unfortunately this is not enough and the output usually suffers from significant residual ambient noise […]
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