son</span><span class="p">[</span><span class="s1">&#39;maxOutputChannelCount&#39;</span><span class="p">]),</span>
            <span class="n">sample_rate</span><span class="o">=</span><span class="nb">float</span><span class="p">(</span><span class="n">json</span><span class="p">[</span><span class="s1">&#39;sampleRate&#39;</span><span class="p">]),</span>
            <span class="n">realtime_data</span><span class="o">=</span><span class="n">ContextRealtimeData</span><span class="o">.</span><span class="