In this paper, we propose an audio extraction method to decrease the influence of the original signal by modifying the watermarking detection system proposed by P. Bassia et al. In the extraction of the watermark, we employ a simple mean filter to remove the influence of the original signal as a preprocessing of extraction and the repetitive insertion of the watermark. As the result of the expe...

We propose an approach to insert physical objects in audio digital signal processing chains, filtering the sound with the acoustic impulse response of any solid measured in real-time. We model physical objects as a linear time-invariant system, which is used as an audio filter. By interacting with the object or with the measuring hardware we can dynamically modify the characteristics of the fil...

Audio signal processing has passed many landmarks in its development as a research topic. Many are well known, such the of phonograph second half 19th century and technology associated with digital telephony that burgeoned late 20th is still hot topic multiple guises. Interestingly, audio been fueled not only by advancements capabilities but also high consumer expectations customer engagement. ...

This paper describes the implementation of a recently introduced parallel graphic equalizer (PGE) in a heterogeneous way. The control and audio signal processing parts of the PGE are distributed to a PC and to a signal processor, of WaveCore architecture, respectively. This arrangement is particularly suited to the algorithm in question, benefiting from the low-latency characteristics of the au...

Today, even low-cost FPGAs provide far more computing power than DSPs. Current FPGAs have dedicated multipliers and even DSP multiply/accumulate (MAC) blocks that enable signals to be processed with clock speeds in excess of 550 MHz. Until now, however, these capabilities were rarely needed in audio signal processing. A serial implementation of an audio algorithm working in the kilohertz range ...

In the search for low-cost, highly available devices for real time audio processing for scientific or artistic purposes, the Arduino platform comes in as a handy alternative for a chordless, versatile audio processor. Despite the fact that Arduinos are generally used for controlling and interfacing with other devices, its built-in ADC/DAC allows for capturing and emitting raw audio signals with...

This paper focuses on combining audio-visual signals for Polish speech recognition in conditions of highly disturbed audio speech signal. Recognition of audio-visual speech was based on combined hidden Markov models (CHMM). Described methods where developed for a single isolated command, nevertheless their effectiveness indicated that they would also work similarly in continuous audio-visual sp...