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Low-cost electronic circuitry for photoacoustic gas sensing ...
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Low-cost electronic circuitry for photoacoustic gas sensing ...
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Abstract:
The circuitry comprises a sine wave generator based on direct digital synthesis, a laser diode driver module, a band-pass frequency filter, a synchronous detector with phase adjustment circuitry and a low pass filter to form an analog lock-in amplifier, and an analog-to-digital converter. A 32-bit ARM microcontroller programmed with the open source Mecrisp dialect of the Forth interpreter language is used to set the frequency, and read the data from the analog-to-digital converter. The circuitry is tethered via a serial interface to a personal computer. A graphical user interface written in Phython allows easy interaction with the microcontroller by sending the appropriate Forth commands. The data acquired is visualized and stored on the personal computer for further processing. The circuitry is easy to build as it is based on through-hole devices, except for two necessary surface mount items, which, however, still can be soldered with a fine tipped soldering iron. The performance of the circuitry was ...
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Keyword:
Direct digital synthesis; Forth; Lock-in detection; NO2; Sine wave generation
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URL: https://zenodo.org/record/6024087 https://dx.doi.org/10.5281/zenodo.6024087
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Eine agentenbasierte Architektur für Programmierung mit gesprochener Sprache ...
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Об истории речевых исследований в России ... : About the history of speech research in Russia ...
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Implementing a Statistical Parametric Speech Synthesis System for a Patient with Laryngeal Cancer
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In: Sensors; Volume 22; Issue 9; Pages: 3188 (2022)
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Improved Durability of Wood Treated with Nano Metal Fluorides against Brown-Rot and White-Rot Fungi
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In: Applied Sciences; Volume 12; Issue 3; Pages: 1727 (2022)
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Evaluation of Tacotron Based Synthesizers for Spanish and Basque
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In: Applied Sciences; Volume 12; Issue 3; Pages: 1686 (2022)
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Contribution of Vocal Tract and Glottal Source Spectral Cues in the Generation of Acted Happy and Aggressive Spanish Vowels
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In: Applied Sciences; Volume 12; Issue 4; Pages: 2055 (2022)
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Neural Vocoding for Singing and Speaking Voices with the Multi-Band Excited WaveNet
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In: Information; Volume 13; Issue 3; Pages: 103 (2022)
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La pulsión contrasexual: microficciones de la desintegración. A propósito de Paul-B. Preciado ...
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La pulsión contrasexual: microficciones de la desintegración. A propósito de Paul-B. Preciado ...
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Technology-mediated task-based language teaching : a qualitative research synthesis
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Affect Expression: Global and Local Control of Voice Source Parameters ; Speech Prosody
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Eine agentenbasierte Architektur für Programmierung mit gesprochener Sprache
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Health practitioners’ perceptions of structural barriers to the identification of intimate partner abuse: a qualitative meta-synthesis
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In: Test Series for Scopus Harvesting 2021 (2022)
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Prosodic Boundary Prediction Model for Vietnamese Text-To-Speech
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In: Proc. Interspeech 2021 ; Interspeech 2021 ; https://hal.archives-ouvertes.fr/hal-03329116 ; Interspeech 2021, Aug 2021, Brno, Czech Republic. pp.3885-3889, ⟨10.21437/interspeech.2021-125⟩ (2021)
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Supplementary material to the paper The VoicePrivacy 2020 Challenge: Results and findings
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In: https://hal.archives-ouvertes.fr/hal-03335126 ; 2021 (2021)
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Supplementary material to the paper The VoicePrivacy 2020 Challenge: Results and findings
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In: https://hal.archives-ouvertes.fr/hal-03335126 ; 2021 (2021)
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