Audio Input: quarter sample rate heterodyne for mono signals

2026-06-03 14:34:57 -04:00 · 2020-11-13 19:55:09 +01:00
parent 6e3add76e3
commit 9cdcfeef70
7 changed files with 70 additions and 34 deletions
@@ -51,8 +51,10 @@ private:
    SampleVector m_convertBuffer;
    SampleSinkFifo* m_sampleFifo;
    Decimators<qint32, qint16, SDR_RX_SAMP_SZ, 16, true> m_decimatorsIQ;
+    int m_quNCOPhase; //!< Quarter sample rate pseudo NCO phase index (0, 90, 180, 270)

    void workIQ(unsigned int nbRead);
+    void decimate(qint16 *buf, unsigned int nbRead);

 private slots:
    void handleAudio();