Dante Exam/47 Questions with Answers (Dante Level 1) What audio sample rates are supported by Dante? - -Dante supports most common sample rates from 44.1kHz to 192kHz.-On a Dante network, there must be a different clock leader for each sample rate on the network. - -False. One Clock Master will provide synchronization to all Dante devices, regardless of their individual sample-rates or frame rates..-A 1Gbps network switch can manage more Dante channels than a single 1Gbps link can. - -False. The maximum amount of channels in a 1Gbps network switch is 512x512 at 96kHz.-A Dante audio subscription (connection) can be established between two Dante interfaces operating at different audio sample rates. - -False. Each Dante interface can only operate at one sample rate at a time. If a sample rate converter is employed, it will sit behind the Dante network port.
-Dante audio is sent: - -Uncompressed, bit-perfect.
-Roughly how many channels of 24-bit, 48kHz audio can be carried on a 1 Gbps connection? - -512x512
-The sample rate of an audio system dictates: - -the audio resolution in
time. According to the Nyquist Theorem, the sample rate must be at least twice the highest audio frequency to be captured.-An audio subscription (connection) can be established between two Dante interfaces operating at different bit depths - -Like most digital audio devices, Dante devices will usually be able to add missing bits or truncate extraneous bits to match the expected internal operation.
-The bit depth of an audio system dictates: - -the resolution of the audio
signal's amplitude. A greater bit depth increases dynamic range.-If we increase the sample rate of a device from 48KHz to 96KHz, what is the impact to the network? - -A 96kHz subscription will require (roughly) twice as much bandwidth as a 48kHz subscription.-Dante AV devices sends and receives audio uncompressed so it is completely compatible with Dante audio devices. - -True. As audio and video are transported separately as independent essences, it is possible for a 1 / 2
Dante AV device to send its audio channels to a Dante Audio device and vice-versa.-What factors significantly affect the overall bandwidth demands of a compressed video flow? (Select all that apply.) - -The video frame resolution (i.e. - 1080p vs 4K) The chroma sampling (i.e. - 4:4:4 vs 4:2:0) The frame rate (ie 24fps vs 60fps) -On a Dante network, a single clock leader is established to manage all audio sample rates and video frame rates. - -True. A single Clock Leader on the network is able to keep all followers synchronised, regardless of their sample-rates or frame-rates.-Interlaced video draws all the odd lines, then all the even lines. This creates two "fields" for each frame. - -TRUE. The interlaced signal contains two fields of a video frame captured consecutively. This enhances motion perception to the viewer, and reduces flicker.-The JPEG 2000 codec initially included in the Dante AV module is used in 65% of digital cinema rooms today. It is visually lossless, supporting both video and computer graphics (like spreadsheets and slide presentations). - - True. The JPEG2000 offers sharp quality and intense colour definition with a visual accuracy adopted by most professional uses.-The JPEG 2000 codec commonly used in Dante AV processes video frames in groups. If a packet is corrupted, the picture will automatically recover when the current group of frames ends and the next keyframe arrives. It could be several frames. - -False. The JPEG2000 codec is the best example of intraframe encoding, applying a compression algorithm to each frame captured individually, not built up from multiple frames, so they can be compressed and transmitted out quickly to reduce latency.-In Dante AV, with the JPEG2000 codec and a 1 Gbps connection, what resolution and frame rates are currently supported? - -Up to 4K (4096 x 2160) at 60fps -Which answer best describes the JPEG2000 encoding process? - -There is a "visually lossless" impact on the first encoding, but JPEG 2000 can decode and encode over and over with no further loss.-Dante AV devices have a scaler in it. What does the scaler affect? - -The scaler can adapt screen resolution. (i.e. - it can scale a 4K source to 1080p for display)
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