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10 results for “carrier frequency”
SpectrumLab display of carrier frequency of WWV-10, 21 Aug 2017
<p>NAME : Martin Potter, VE3OAT<br> GEOPOSIT : 45 15' 9.023" N 75 35' 27.60" W (Maidenhead FN25eg)<br> START TIME : 1400 UT<br> STATION CONFIG :<br> Multi-band vertical antenna with 18 radials.<br> Receiver Yaesu FTdx1200 in AM mode with audio bands limited to<br> 800-1200 Hz (18 dB/octave roll-off).<br> Trimble Thunderbolt 10 MHz output to HP 3325B sig generator set<br> to 9999 kHz and injected to station antenna.<br> Measured nominal 1 kHz beat note between WWV-10 and sig generator<br> using SpectrumLab software.<br> <br> Note : On 20 Aug, receiver AGC was ON. On 21 Aug, receiver AGC was<br> OFF and audio output level was set using RF Gain control. </p>
SpectrumLab display of carrier frequency of WWV-10, 20 Aug 2017
<p>NAME : Martin Potter, VE3OAT<br> GEOPOSIT : 45 15' 9.023" N 75 35' 27.60" W (Maidenhead FN25eg)<br> START TIME : 1400 UT<br> STATION CONFIG :<br> Multi-band vertical antenna with 18 radials.<br> Receiver Yaesu FTdx1200 in AM mode with audio bands limited to<br> 800-1200 Hz (18 dB/octave roll-off).<br> Trimble Thunderbolt 10 MHz output to HP 3325B sig generator set<br> to 9999 kHz and injected to station antenna.<br> Measured nominal 1 kHz beat note between WWV-10 and sig generator<br> using SpectrumLab software.<br> <br> Note : On 20 Aug, receiver AGC was ON. On 21 Aug, receiver AGC was<br> OFF and audio output level was set using RF Gain control. </p> <p> </p>
Two graphical displays from SpectrumLab of WWV-10 carrier frequency on 18 Aug 2017
<p>NAME : Martin Potter, VE3OAT<br> GEOPOSIT : 45 15' 9.023" N 75 35' 27.60" W (Maidenhead FN25eg)<br> START TIME : 1400 UT<br> STATION CONFIG :<br> Multi-band vertical antenna with 18 radials.<br> Receiver Yaesu FTdx1200 in AM mode with audio bands limited to<br> 800-1200 Hz (18 dB/octave roll-off).<br> Trimble Thunderbolt 10 MHz output to HP 3325B sig generator set<br> to 9999 kHz and injected to station antenna.<br> Measured nominal 1 kHz beat note between WWV-10 and sig generator<br> using SpectrumLab software.<br> <br> Note : On 20 Aug, receiver AGC was ON. On 21 Aug, receiver AGC was<br> OFF and audio output level was set using RF Gain control. </p> <p> </p>
Database for HF Transmitted Speech with Carrier Frequency Difference
<p>This public database is designed for evaluation of carrier frequency difference estimation systems and is published as part of our paper "Open Range Pitch tracking for Carrier Frequency Difference<br> Estimation from HF Transmitted Speech". It consists of over 23 ours of real transmissions over HF links with a known carrier frequency shift during demodulation.</p> <p>To record the data we have set up a transmission system between our base station in Paderborn and several other distant base stations across Europe (see Fig. 4), transmitting utterances from the LibriSpeech corpus.</p> <p>Kiwi-software defined radio (SDR) devices at distant base stations were utilized to demodulate the received SSB HF signals and send the recorded audio signals back to our servers via a websocket connection. Audio markers had been added to the transmitted signal to allow for an automated time alignment between the transmitted<br> and received signals, easing the annotation and segmentation of the data.<br> For the transmissions a beacon, callsign DB0UPB, was used, which was supervised by a human to avoid interference with other ham radio stations. The HF signals are SSB modulated using the Lower Side Band (LSB) with a bandwidth of 2.7 kHz at carrier frequencies of 7.06 MHz − 7.063 MHz and 3.6 MHz − 3.62 MHz. To simulate a carrier frequency difference the demodulation frequency of the transmitter and the receiver were selected to differ by values from the set [0, 100, 300, 500, 1000]. Although the original speech samples have a sampling rate of 16 kHz, and the Kiwi-SDR samples the data at 12.001 Hz, the finally emitted data is band-limited to 2.7 kHz (International Telecommunication Union (ITU) regulations) which introduces a loss of the upper frequencies in case of LSB<br> transmission depending on the carrier frequency difference. The data set has a total size of 23:31 hours of which 3:28 hours contain speech activity.</p>
example stimuli of "Behavioral effects of rhythm, carrier frequency and temporal cueing on the perception of sound sequences"
<p>Exemplary subset of stimuli accompanying the manuscript "Behavioral effects of rhythm, carrier frequency and temporal cueing on the perception of sound sequences"</p>
data & analysis scripts of " Behavioral effects of rhythm, carrier frequency and temporal cueing on the perception of sound sequences"
<p>Analysis scripts and data accompanying the manuscript "Behavioral effects of rhythm, carrier frequency and temporal cueing on the perception of sound sequences"</p>
Estimation of the Carrier Frequency and Incidence of Smith-Lemli-Opitz Syndrome in African Americans
ClinicalTrials.gov study NCT00017732. IPD Sharing: Not stated. Countries: 1. Publications: 3.
Simulation files for "How Charge Carrier Exchange between Absorber and Contact influences Time Constants in the Frequency Domain Response of Perovskite Solar Cells"
<p>MATLAB files, SETFOS .parx files for the manuscript "How Charge Carrier Exchange between Absorber and Contact influences Time Constants in the Frequency Domain Response of Perovskite Solar Cells"</p>
Frequency of Selected Single Nucleotide Polymorphisms in Huntington Disease Gene Expansion Carriers
ClinicalTrials.gov study NCT06667414. IPD Sharing: NO. Countries: 12. Publications: 0.
Identification of Specific Modulation Frequencies in Hepatitis B Carriers With and Without Hepatocellular Carcinoma
ClinicalTrials.gov study NCT01641276. IPD Sharing: Not stated. Countries: 1. Publications: 0.
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